REPAIR / SERVICING TV TOSHIBA 19EL833R

Technical description and composition of the TOSHIBA 19EL833R TV, type of panel and applicable modules. The composition of the modules.
TOSHIBA LED
Model: 19EL833R
Chassis / Version: 17MB60 VESTEL
Panel: V185B1-LE2 LED
LED driver (backlight): 17CON07-2 VESTEL
PWM LED driver: 3389DR
Power Supply (PSU): 17PW05-3 VESTEL
PWM Power: ICE3BR0665J (Standby)
MainBoard: 17MB60-4
IC MainBoard: MSD9WB9PX-LF-2, MX25L8005, W971GG6JB-18, K9F1208UOC, TPA3113, DTOS403LH122E
Tuner: DTDS403LH122E
Control: CT-90326
Specifications 19EL833
TOSHIBA 19EL833R
General repair guidelines for TV LCD LED
Repair of electronic equipment usually begins with its external inspection and diagnosis of the malfunction. In this case, you should examine all the internal components of the TOSHIBA 19EL833R TV, as well as the external elements of the housing. Many visible changes in the state of the elements make it possible to determine the further direction of troubleshooting and localization of the defect. If ring cracks are detected in the soldering of the terminals of the elements or dangling connecting tracks, swollen capacitors or charred resistors - all this can be characteristic signs of the causes or consequences of an already known typical malfunction.
In the case when the 19EL833R does not turn on, does not respond to the remote control and buttons on the front panel, does not blink bulbs and does not show any signs of operability, the power supply module 17PW05-3 VESTEL is probably faulty in this case. If it is serviceable under such manifestations, it is necessary to check the power supply stabilizer (converter) of the processor on the motherboard.When diagnosing and repairing the power supply, after replacing the swollen capacitors of the secondary rectifier filters (if any), you must first check the mains fuse. When it is broken, the power elements of transistors and rectifier bridge diodes should be checked for avalanche (thermal) breakdown.
The reasons for the breakdown of the power switch in switching power supplies (IIPS) can be different, for example, a malfunction of semiconductor cells or electrolytic capacitors in the stabilization circuits of the primary circuit, as well as a failure in the operation of the PWM controller chip or broken resistors in its bundle.
If, when you turn on the TV, the image appears and immediately disappears, or is missing initially when you turn on, but the sound has other functions that work, there is a high probability of a malfunction of the LED driver (power converter for the backlight LEDs of the V185B1-LE2 LED panel). In such cases, the general power module is also subject to verification, in which the electrolytic capacitors of the rectifier filter supplying the LED driver should be checked.
To check the health of the LEDs, as well as contact connections in the ruler circuit, it is necessary to disassemble the panel.
A break in the line of LEDs connected in series cannot be detected with a multimeter or tester without disassembling the panel. To open all the transitions, several tens of volts are needed, and it is best to use a current source for such purposes.
On the 17MB60-4 motherboard, in case of a malfunction, you should first check the performance of all the stabilizers or power converters of the microcircuits and, if necessary, update the software (software).
Before changing the tuner tun DTDS403LH12, if it is not possible to tune to television channels, make sure that there are supply voltages, including varicap power (30-33V), which must be measured on the corresponding tuner pins.

Remember! Attempts to self-repair by users of the TOSHIBA 19EL833R TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!

SCHEMATIC DIAGRAM  / SERVICE MANUAL   ------------------>    TOSHIBA 19DL833R, 19DL834R, 19EL834R. Main VESTEL 17MB60

 The appearance of the MainBoard 17MB60-4 is shown in the figure below:
The 17MB60-4 motherboard is made using the MSD9WB7PX-2 processor, combined with a scaler. For its work, two microchips of external random access memory (DDR) HY5PS121621C and read-only memory (ROM) NAND512-A are used. To ensure processor power, stabilizers 1.2V, 2.5V, 3.3V are used. For DDR, the voltage is 1.8V, for the power of NAND 3.3V. It is advisable to start the repair by checking the power supply of the standby mode 3.3V. Further in the operating mode, it is necessary to check the operability of all linear voltage stabilizers and converters. If there is a backlight and no image, the power of the LCD panel 5V or 12V, depending on the type of panel used, can be measured directly on the LVDS connector. A typical malfunction is a NAND ROM software failure. At the same time, the TV does not turn on and the indicators on the panel blink. It is updated via the USB port if the software of the SPI FLASH chip in which the bootloader is located is not damaged, or if there is a mboot.bin file on the media, which can be used as standard SPI FLASH content.
17MB60-4 can be used in TVs:
SHARP LC-19LE510RU (Panel LC185EXN (SD)(A1)), SHARP LC-22LE510RU (Panel 22 "), SHARP LC-32LE510RU (Panel LC320EUN SD V1), SHARP LC-32SH130E (Panel LC320WXN / 720p HD), SHARP LC-32SH340 LC-32SH340E (Panel LC320WUN (SC)(B1) ), TOSHIBA 19EL833R (Panel V185B1-LE2 LED), TOSHIBA 26LD833F (Panel LC260EXN (SD)(A3)), TOSHIBA 32DL833R 32DL834R (Panel LC320EXN SD A2 led).
The appearance of the power supply
Main features of the TOSHIBA 19EL833R device:
Installed matrix (LED panel) V185B1-LE2 LED.
The LED driver 17CON07-2 is used to power the backlight LEDs, it is controlled by the 3389DR PWM controller.
The necessary supply voltages for all nodes of the TOSHIBA 19EL833R TV are generated by the 17PW05-3 power supply module or its analogs using ICE3BR0665J (Standby) microcircuits.
MainBoard - the main board (motherboard) is a 17MB60-4 module, using microchips MSD9WB9PX-LF-2, MX25L8005, W971GG6JB-18, K9F1208UOC, TPA3113, DTOS403LH122E and others.
The DTDS403LH122E tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: CHIMEI INNOLUX
Model: V185B1-LE2
Type: a-Si TFT-LCD, Panel
Diagonal size: 18.5 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 409.8x230.4 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 250 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (8-bit), CIE1931 70%
Response Time: 1.3 / 3.7 (Tr / Td)
Frequency: 60Hz
Lamp Type: 14S8P WLED Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
 Trademark: TOSHIBA, Model: 19EL833.
Briefly from the TV: LCD, LED backlight, 19 ", 1366x768, 720p HD, sound: 5W, HDMI connectors: 2.
The composition uses MainBoard 17MB60-4 and the LCD panel (matrix) V185B1-LE2.
Power Supply Unit (PSU) 17PW05-3 VESTEL Power Supply.
TOSHIBA 19EL833 LED TV with V185B1-LE2 LCD, 19 "(48 cm) diagonal, 16: 9 format. The required screen brightness of 250 cd / m² is provided by LED backlighting. The ratio of maximum brightness to minimum (contrast) is 1000 : 1. This model uses side illumination from Edge LEDs. You can view images in high quality HD at a resolution of 1366x768 pixels in the standard for graphic decomposition 720p (HD Ready). The input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC Graphic th processing and the formation of the digital signal is in 480i standards, 480p, 576i, 576p, 720p, 1080i, 1080p Supported multimedia file formats:. MP3, WMA, MPEG4, Xvid, MKV, JPEG.
The power of the speaker system of sound 5 W (2x2.5 W) provide two speakers. It uses a NICAM stereo signal processing system and Sound Surround.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, SCART, RGB, VGA, HDMI x2, USB. An output for connecting headphones is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector is used on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768, 1280x1024, 1360x768.
A digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C standards.
The power consumed by the TV in the operating mode from the network is 40 watts.
Overall dimensions: with stand 462x376x159 mm, without stand 462x302x35 mm.
TV mass: with stand: 4 kg, without stand: 3.4 kg.
Attention! The V185B1-LE2 panel of the TOSHIBA 19EL833 LED TV is an expensive and unreliable element.
Avoid any impact on the glass and pressure on the surface of the screen to avoid damage to the LED panel!
It is also unsafe to get liquid on the screen. Sometimes one drop is enough if it flows down the glass onto the cables so that the TV becomes unrepairable.

REPAIR / SERVICING TV TOSHIBA 19DL834R

Technical description and composition of the TOSHIBA 19DL834R TV, type of panel and applicable modules. The composition of the modules.
TOSHIBA LED
Model: 19DL834R
Chassis / Version: 17MB
Panel: V185B1-LE2 30070337
LED driver (backlight): 17CON07-2 120111 Vestel
Power Supply (PSU): 17PW05-03 75024747 20551413
PWM Power: G1115LOP (8), ICE3BR0665 (Standby)
MainBoard: 17MB60-3.1 75026094 20563033
IC MainBoard: DVD SA5888, MT1389DE
Tuner: DTOS403LH122E
Control: CT-8023 75026257 20548798
Specifications 19DL834
TOSHIBA 19DL834R
General repair guidelines for TV LCD LED
Diagnostics of malfunctions and repairs of the TOSHIBA 19DL834R, as well as other electronic devices, is recommended to begin with an external inspection of the external and internal elements. Visible damage to elements can sometimes indicate the direction of the search for a defect even before the necessary measurements are taken. In some cases, faulty elements can be seen with the naked eye, for example, charred resistors or swollen metal-ceramic capacitors, or electrolytic in rectifier filters. Ring cracks formed in the soldered terminals of transformers or heating elements of the circuit are also frequent sources of many malfunctions with a variety of external manifestations.
If the 19DL834R TV does not turn on, does not make any sounds when it is turned on, and also no indicators on the front panel light or blink - there is a high probability of a malfunction in the power module. In some cases, only the regulator or power converter of the control processor may be faulty, which is typical for some TOSHIBA models. It is advisable to start the troubleshooting of the power supply module by checking the state of the electrolytic capacitors of the rectifier filters and the mains fuse. Defective capacitors should be replaced. If the mains fuse is broken, it is necessary to check first of all the power semiconductor elements - rectifier diodes and transistors, which are often found in such a state of breakdown.
In most cases, key breakdowns in switching power supplies (SMPS) do not occur for no reason and you should look for other faulty circuit elements that could provoke a defect. This can be dried electrolytic capacitors in the primary circuit, and faulty damper elements, as well as dangling resistors or punched semiconductor elements in the stabilization circuits. Possible defective PWM G1115LOP (8), ICE3BR065 (8) from the manufacturer.
If the TOSHIBA 19DL834R does not have an image, but there is sound and the TV is controlled by the remote control, there may be a malfunction in the backlight circuits of the V185B1-LE2, 30070337. The LEDs or the power converter, the LED driver, may be malfunctioning. Often in such cases, when you turn on the TV, an image appears and immediately disappears. First of all, it is necessary to verify the operability of the electrolytic capacitors of the rectifier filter supplying the LED driver, and check the LEDs, connecting obviously known good diagnostics.
To check the health of the LEDs, as well as contact connections in the ruler circuit, it is necessary to disassemble the panel.
To detect a break in the LED lines without disassembling the panel, a current source is required. It is impossible to open transitions connected in series with a simple multimeter; voltage of several tens of volts is necessary.
On the motherboard 17MB60-3.1 75026094 20563033, in the event of a malfunction, you should first check the performance of all the stabilizers or power converters of the microcircuits and, if necessary, update the software (software).
When repairing an MB board, you need to check its components DVD SA5888, MT1389DE. Defective items should be replaced. If BGA chips are installed, their malfunction is usually localized by heating. If chips with BGA soldering technology are used, a problem in its implementation is detected by the local heating of the chip.
Before replacing the DTOS403LH122E tuner, if there is no tuning for the channels, you must first check the power supply voltage at its terminals, including the power supply of varicaps (30-33V).

Attention to the owners! Attempts to self-repair the TOSHIBA 19DL834R TV are not recommended by the manufacturer and can lead to serious negative consequences!

SCHEMATIC DIAGRAM  / SERVICE MANUAL   ------------------>    TOSHIBA 19DL833R, 19DL834R. Main VESTEL 17MB60

 The appearance of the MainBoard 17MB60-3.1 is shown in the figure below:
The 17MB60-3.1 motherboard is made using the MSD9WB7PX-2 processor, combined with a scaler. For its work, two microchips of external random access memory (DDR) HY5PS121621C and read-only memory (ROM) NAND512-A are used. To ensure processor power, stabilizers 1.2V, 2.5V, 3.3V are used. For DDR, the voltage is 1.8V, for the power of NAND 3.3V. It is advisable to start the repair by checking the power supply of the standby mode 3.3V. Further, in the operating mode, it is necessary to check the operability of all linear stabilizers and voltage converters. If there is a backlight and no image, the power of the LCD panel 5V or 12V, depending on the type of panel used, can be measured directly on the LVDS connector. A typical malfunction is a NAND ROM software failure. At the same time, the TV does not turn on and the indicators on the panel blink. It is updated via the USB port if the software of the SPI FLASH chip in which the bootloader is located is not damaged, or if there is a mboot.bin file on the media, which can be used as standard SPI FLASH content.
17MB60-3.1 can be used in TVs:
TOSHIBA 19DL834R (Panel V185B1-LE2 30070337), TOSHIBA 22DL833R 22DL834R (Panel LC216EXN (SD)(A1)), TOSHIBA 22EL833R (Panel LC216EXN-SDA1 / LC216EXN-SCA1), TOSHIBA 26DL834R (Panel LC260EXN (SD)(A3)), TOSHIBA 19DL833R (Panel V185B1-LE2 REV. C1).
Main features of the TOSHIBA 19DL834R device:
Installed matrix (LED panel) V185B1-LE2 30070337.
The LED driver 17CON07-2 is used to power the backlight LEDs.
The necessary supply voltages for all nodes of the TOSHIBA 19DL834R TV are generated by the 17PW05-03 power supply module or its analogs using G1115LOP (8), ICE3BR0665 (Standby) microcircuits.
MainBoard - the main board (motherboard) is a 17MB60-3.1 module, using DVD chips SA5888, MT1389DE and others.
The DTOS403LH122E tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: CHIMEI INNOLUX
Model: V185B1-LE2
Type: a-Si TFT-LCD, Panel
Diagonal size: 18.5 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 409.8x230.4 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 250 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (8-bit), CIE1931 70%
Response Time: 1.3 / 3.7 (Tr / Td)
Frequency: 60Hz
Lamp Type: 14S8P WLED Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
 Brand: TOSHIBA, Model: 19DL834.
Briefly from the TV: LCD, LED backlight, built-in DVD player, 19 ", 1366x768, 720p HD, sound: 5W, HDMI connectors: 2.
The composition uses MainBoard 17MB60-3.1 75026094 and an LCD panel (matrix) V185B1-LE2.
Power Supply Unit (PSU) 17PW05-03 75024747 Power Supply.
TOSHIBA 19DL834 LED TV with V185B1-LE2 LCD, 19 "(48 cm) diagonal, 16: 9 format. The required screen brightness of 300 cd / m² is provided by LED backlighting. The ratio of maximum brightness to minimum (contrast) is 1000 : 1. Dynamic contrast ratio of 3,000,000: 1 is achieved by special control of the LEDs. This model uses side LED backlighting from Edge LEDs. You can view images in high quality HD at a resolution of 1366x768 pixels in the standard of graphic decomposition 720p (HD Ready). Input high frequency or video signal can be processed in analogue systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, MPEG4, Xvid, DivX , MKV, VideoCD, SVCD, Picture CD, JPEG.
The power of the speaker system of sound 5 W (2x2.5 W) provide two speakers. The audio processing system NICAM STEREO is used.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, component, SCART, RGB, VGA, HDMI x2, USB. An output for connecting headphones is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector is used on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768.
A digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C standards.
The power consumed by the TV in the operating mode from the network is 20 watts.
Overall dimensions: with stand 462x337x159 mm, without stand 462x302x54 mm.
TV Weight: with stand: 4.1 kg, without stand: 3.8 kg.
Attention! The V185B1-LE2 panel of a TOSHIBA 19DL834 LED TV is an expensive and unreliable element.
Avoid any impact on the glass and pressure on the surface of the screen to avoid damage to the LED panel!
It is also unsafe to get liquid on the screen. Sometimes one drop is enough if it flows down the glass onto the cables so that the TV becomes unrepairable.

REPAIR / SERVICING TV TOSHIBA 19DL833R

Technical description and composition of the TOSHIBA 19DL833R TV, type of panel and applicable modules. The composition of the modules.
TOSHIBA LED
Model: 19DL833R
Chassis / Version: 17MB60-3.1
Panel: V185B1-LE2 REV. C1
LED driver (backlight): 17CON07-2
PWM LED driver: 3388DR
Power Supply (PSU): 17PW05-3
PWM Power: ICE3BR1765J (Standby), CAT7581
MOSFET Power: MDS5652
MainBoard: 17MB60-3.1
IC MainBoard: CPU: MSD9WB7PX; DRAM: HY5PS121621C; NAND Flash: NAND512-A
Tuner: DTOS403LH122E
Specifications 19DL833
TOSHIBA 19DL833R
General repair guidelines for TV LCD LED
If the TV does not turn on, no control lights are on or blinking, there are no sounds when you turn on, and there is not the slightest sign of operability - the most likely malfunction is in the power module. First of all, it is necessary to replace the swollen capacitors of the rectifier filters, if any. If the mains fuse is broken in the power supply, in most cases a breakdown of the power key (s) MDS5652 is detected, which can be integrated with a PWM controller, or a separate field-effect transistor can be used. The rectifier bridge diodes and the electrolytic capacitor of the mains rectifier filter should also be checked.
As a rule, the keys in switching power supplies (SMPS) are reliable enough and rarely fail for no reason to be looked for by checking other components of the circuit - electrolytic capacitors, resistors and semiconductor elements of the primary circuit. The PWM chip is verified by replacing it with a known good one.
Sometimes the TOSHIBA 19DL833R TV does not have an image, but there is sound, or the image appears and immediately disappears. In this case, there is a possibility of a malfunction of the LED driver - the power converter of the backlight LEDs of the V185B1-LE2 REV panel. C1, or a break in the LED circuit is possible. In such cases, first of all, it is necessary to verify the operability of the electrolytic capacitors of the filter by the power of the backlight unit.
A malfunction in the backlight circuits often occurs due to an open in the power circuit of the LED lines. It requires disassembling the panel and checking the LEDs themselves, the rations of their terminals, as well as the reliability of the connections in the connectors and rations of the terminals.
When trying to detect a break in the LED lines, it should be taken into account that it is difficult to do this without disassembling the panel. For example, a current source is needed to open PN junctions connected in series.
In cases of attempts to repair the 17MB60-3.1 motherboard, it is necessary to check the operability of the linear stabilizers and power converters of its microcircuits and, if possible, update the software (software). BGA chips can sometimes be diagnosed with local heating.
Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Checking or replacing CPU elements: MSD9WB7PX; DRAM: HY5PS121621C; NAND Flash: NAND512-A requires the necessary training and professional skills to repair modules at the component level. Problems associated with the use of BGA soldering technologies can be diagnosed by warming up.
If the TV works normally from external devices, but does not tune into television channels, the DTOS403LH122E tuner may be malfunctioning. In such cases, first of all, you should make sure that there are supply voltages at its corresponding conclusions. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus. Sometimes the cause of the inoperability of the tuner may be a software failure.

Remember! Attempts to self-repair by users of the TOSHIBA 19DL833R TV without the appropriate qualifications and the necessary experience can lead to serious negative consequences!


SCHEMATIC DIAGRAM  / SERVICE MANUAL   ------------------>    TOSHIBA 19DL833R, 19DL834R, 19EL834R. Main VESTEL 17MB60

The appearance of the MainBoard 17MB60-3.1 is shown in the figure below:
The 17MB60-3.1 motherboard is made using the MSD9WB7PX-2 processor, combined with a scaler. For its work, two microchips of external random access memory (DDR) HY5PS121621C and read-only memory (ROM) NAND512-A are used. To ensure processor power, stabilizers 1.2V, 2.5V, 3.3V are used. For DDR, the voltage is 1.8V, for the power of NAND 3.3V. It is advisable to start the repair by checking the power supply of the standby mode 3.3V. Further in the operating mode, it is necessary to check the operability of all linear voltage stabilizers and converters. If there is a backlight and no image, the power of the LCD panel 5V or 12V, depending on the type of panel used, can be measured directly on the LVDS connector. A typical malfunction is a NAND ROM software failure. At the same time, the TV does not turn on and the indicators on the panel blink. It is updated via the USB port if the software of the SPI FLASH chip in which the bootloader is located is not damaged, or if there is a mboot.bin file on the media, which can be used as standard SPI FLASH content.
17MB60-3.1 can be used in TVs:
TOSHIBA 19DL834R (Panel V185B1-LE2 30070337), TOSHIBA 22DL833R 22DL834R (Panel LC216EXN (SD)(A1)), TOSHIBA 22EL833R (Panel LC216EXN-SDA1 / LC216EXN-SCA1), TOSHIBA 26DL834R (Panel LC260EXN (SD)(A3)), TOSHIBA 19DL833R (Panel V185B1-LE2 REV. C1).
The appearance of the power supply
Main features of the TOSHIBA 19DL833R device:
Installed matrix (LED-panel) V185B1-LE2 REV. C1.
The LED driver 17CON07-2 is used to power the backlight LEDs, it is controlled by the 3388DR PWM controller.
The necessary supply voltages for all nodes of the TOSHIBA 19DL833R TV are generated by the 17PW05-3 power module or its analogs using ICE3BR1765J (Standby), CAT7581 microcircuits, and MDS5652 type power switches.
MainBoard - the main board (motherboard) is a 17MB60-3.1 module, using CPU chips: MSD9WB7PX; DRAM: HY5PS121621C; NAND Flash: NAND512-A and others.
The DTOS403LH122E tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: CHIMEI INNOLUX
Model: V185B1-LE2
Type: a-Si TFT-LCD, Panel
Diagonal size: 18.5 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 409.8x230.4 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 250 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (8-bit), CIE1931 70%
Response Time: 1.3 / 3.7 (Tr / Td)
Frequency: 60Hz
Lamp Type: 14S8P WLED Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V

Trademark: TOSHIBA, Model: 19DL833.
Briefly from the TV: LCD, LED backlight, built-in DVD player, 19 ", 1366x768, 720p HD, sound: 5W, HDMI connectors: 2.
The composition uses MainBoard 17MB60-3.1 and an LCD panel (matrix) V185B1-LE2 REV. C1.
Power Supply Unit (PSU) 17PW05-3 Power Supply.
TOSHIBA 19DL833 LED TV with V185B1-LE2 LCD, 19 "(48 cm) diagonal, 16: 9 format. The required screen brightness of 250 cd / m² is provided by LED backlighting. The ratio of maximum brightness to minimum (contrast) is 1000 : 1. This model uses side illumination from Edge LEDs. You can view images in high quality HD at a resolution of 1366x768 pixels in the standard for graphic decomposition 720p (HD Ready). The input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC Graphic th processing and the formation of the digital signal is in 480i standards, 480p, 576i, 576p, 720p, 1080i, 1080p Supported multimedia file formats:. MP3, MPEG4, Xvid, DivX, MKV, VideoCD, SVCD, Picture CD, JPEG.
The power of the speaker system of sound 5 W (2x2.5 W) provide two speakers. The audio processing system NICAM STEREO is used.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, component, SCART, VGA, HDMI x2, USB. An output for connecting headphones is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector is used on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768.
A digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C standards.
The power consumed by the TV in the operating mode from the network is 20 watts.
Overall dimensions: with stand 462x337x159 mm, without stand 462x302x54 mm.
TV mass: with stand: 4.5 kg, without stand: 3.8 kg.
Attention! Panel V185B1-LE2 REV. The C1 TOSHIBA 19DL833 LED TV is an expensive and unreliable element.
Avoid any impact on the glass and pressure on the surface of the screen to avoid damage to the LED panel!
It is also unsafe to get liquid on the screen. Sometimes one drop is enough if it flows down the glass onto the cables so that the TV becomes unrepairable.

REPAIR / SERVICING TV TOSHIBA 52XV550PR

Technical description and composition of the TOSHIBA 52XV550PR TV, type of panel and applicable modules. The composition of the modules.
Toshiba
Model: 52XV550PR
Chassis / Version: V28A00071
Panel: LTA520HB10
Lamp backlight: CCFL
T-CON: FHD60C4LV0.5; THF9301
Inverter (backlight): LJ97-01810A
Power Supply (PSU): PE0627 V28A00085001
PWM Power: R2A20112SP, STR-Z2589
MOSFET Power: TK20A60
MainBoard: PE0532 V28A00071 0B1
IC MainBoard: FLI32652H, HY5PS121621C, CXB1444R, STA333W, 0747EFI T5CB5-6UK1 F1789ZAE
Tuner: ENG37E11GF
Specifications 52XV550PR
TOSHIBA 52XV550PR
General recommendations for repairing TV LCD
Possible manifestations of defects
- The TOSHIBA 52XV550PR does not turn on at all. There is no reaction to the remote control and control buttons from the front panel. Indicator lights do not light or flash.
With such manifestations, a malfunction is most likely to be detected in the PE0627 power supply module. Then it is necessary to measure its output voltages and, in case of their complete or partial absence, it is necessary to check the serviceability of power switches and rectifier diodes of the converters for a possible short circuit.
In case of any breakdowns in the secondary circuits, the converter can operate in emergency short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse or the current sensor at the source of the key more often breaks.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke an excess of the maximum current or voltage. These can be circuits supplying the PWM controller, damping or frequency-setting circuits, or elements of OOS (negative feedback) in the stabilization circuit. PWM controllers (PWM), in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- There is no image, but there is sound and reaction to commands from the remote control. Or the image appears immediately after turning on and disappears.
These manifestations can be triggered by the power module, or by inverter defects, as well as by the distortion of the currents in the lamps due to their uneven wear. After checking all the electrolytic capacitors of the filters that are involved in the power supply of the inverter, it is necessary to ring in its converter the power switches for breakdown and the secondary windings of the transformers for an open.
Sometimes, for diagnostic purposes, it is necessary to disable the inverter protection. In such cases, special care must be taken during work, and the protection circuits should be restored immediately after the repair is completed.
- The TV does not turn on, the indicator indicates standby or operating mode, or blinks.
Repair or diagnostics of the PE0532 motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - FLI32652H, HY5PS121621C, CXB1444R, STA333W, 0747EFI T5CB5-6UK1 F1789ZAE and replace the failed chips with new ones. Some malfunctions may be due to the use of BGA soldering technologies in modern Main Board technologies. Typically, such defects are detected by local heating of the chip.
In the absence of tuning to the channels of on-air or cable television, you should make sure that the software is correct, as well as in accordance with the ratings of the supply voltages at the terminals of the ENG37E11GF tuner. It is also necessary to check the presence of pulses of data exchange between the tuner and the processor via the I2C bus using an oscilloscope.

It should be remembered! Attempts to independently repair the TOSHIBA 52XV550PR TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!

SCHEMATIC DIAGRAM  / SERVICE MANUAL   ------------------>    TOSHIBA 52XV550PR Chassis V28A00071

 Service Manual with Schematic Diagram 151 pages on model 52XV550PR

 The appearance of MainBoard PE0532 is shown in the figure below:
PE0532
PE0532 can be used in TVs:
TOSHIBA 32CV500PR (Panel LTA320AA03), TOSHIBA 37CV500PR (Panel LC370WXN-SAC1 75011157), TOSHIBA 42CV500PR (Panel LC420WXN-SAB1 75011173), TOSHIBA 42XV550PR (Panel LC420WUN (SA)(A1)), TOSHIBA 32XV550PR (Panel LTA320HA02), TOSHIBA 32XV500PR (Panel LTA320HA02), TOSHIBA 37XV501PR (Panel LC370WUN (SA)(B1)).
The appearance of the power supply
Key Features of the TOSHIBA 52XV550PR:
Installed matrix (LCD-panel) LTA520HB10.
The matrix control uses the Timing Controller (T-CON) FHD60C4LV0.5 ;.
To power the backlight used inverter LJ97-01810A.
The necessary supply voltages for all nodes of the TOSHIBA 52XV550PR TV are generated by the PE0627 power supply module or its analogs using R2A20112SP, STR-Z2589 microchips and TK20A60 type power switches.
MainBoard - the main board (motherboard) is a PE0532 module, using chips FLI32652H, HY5PS121621C, CXB1444R, STA333W, 0747EFI T5CB5-6UK1 F1789ZAE and others.
The ENG37E11GF tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA520HB10
Type: a-Si TFT-LCD, Panel
Diagonal size: 52 inch
Resolution: 1920x1080, FHD
Display Mode: S-PVA, Normally Black, Transmissive
Active Area: 1152x648 mm
Brightness: 500 cd / m²
Contrast Ratio: 3000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 14/6 (Tr / Td); 8 (G to G)
Frequency: 60Hz
Lamp Type: CCFL
Signal Interface: LVDS (2 ch, 8-bit)
Voltage: 12.0V


 TOSHIBA 52XV550PR LCD TV with 52 ”(132 cm) diagonal LCD display in 16: 9 format. 500 cd / m² screen brightness is provided by CCFL (EEFL) fluorescent lamps. The ratio of maximum brightness to minimum (contrast) is 3000 : 1. Dynamic contrast ratio of 30000: 1 is achieved by special control of the backlight operation.The design and technical capabilities of the TV provide for viewing broadcasts and films in high quality HD at a resolution of 1920x1080 pixels in a graphic resolution according to the standard 1080p (Full HD). The output or video signal can be processed in analogue systems PAL, SECAM, NTSC. Graphic processing and digital signal generation takes place in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p.
The power of the sound acoustic system is 20 W (2x10 W). It uses a NICAM stereo signal processing system and Sound Surround.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x3, S-Video, component, SCART x2, RGB, VGA, HDMI x3. An output for connecting headphones is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector is used on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768.
A digital tuner is capable of receiving television channels in DVB-T standards.
The power consumed by the TV in the operating mode from the network is 305 watts.
Overall dimensions: with stand 1252x839x328 mm, without stand 1252x700x102 mm.
TV Weight: with stand: 37 kg, without stand: 31.1 kg.
Attention! The TOSHIBA 52XV550PR LCD TV panel is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!

REPAIR / SERVICING TV TOSHIBA 47Z3030DR

Technical description and composition of the TOSHIBA 47Z3030DR TV, type of panel and applicable modules. The composition of the modules.
Toshiba
Model: 47Z3030DR
Chassis / Version: PE0399A
Panel: LC470WU2 (SL) (A1)
T-CON: 6870C-0166B LC470WU2-SLA1-G31
Inverter (backlight): 6632L-0404A KUBNKM136A MASTER & 6632L-0405A KUBNKM136B SLAVE
Power Supply (PSU): PE0401 V28A00055301 & PE0473 V28A00060501
PWM Power: STR-Z4579, STR-W6765, STR-A6169, FA5501AP
MOSFET Power: FP20W60C3 (PFC)
MainBoard: PE0399 A V28A00489B1 & PE0398 V28A000491A1
Tuner: TDQD4-003A
Specifications 47Z3030DR
TOSHIBA 47Z3030DR
General recommendations for repairing TV LCD
Possible malfunctions
- The TOSHIBA 47Z3030DR does not turn on. There are no signs of operability. The indicators on the front panel do not light or flash, the TV does not respond to the remote control and control buttons.
With such manifestations, a malfunction is most likely to be detected in the PE0401 power module. Then we recommend that you measure its output voltages and, if they are absent, you should check the health of the power switches (FP20W60C3 (PFC)) and the rectifier diodes of the converters for possible short circuit.
In the event of breakdowns in the secondary circuits of the converter, it can usually fail in short circuit mode, and in the event of a short circuit in the power elements of the primary circuit, the mains fuse or current sensor at the source of the key most often breaks.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, in the power supply circuit of a PWM controller, in frequency-setting or damping circuits, as well as in Negative Stabilization Feedback. PWM chips STR-Z4579, STR-W6765, STR-A6169, FA5501AP are usually checked by replacing with new, or obviously working.
- There is no image, there is sound, it is responding to the remote control. Or immediately after turning on for a second, the image may appear and immediately disappear.
These manifestations can be triggered by the power module, or by inverter defects, as well as by the distortion of the currents in the lamps due to their uneven wear. If all the electrolytic capacitors of the filter according to the power supply of the inverter are serviceable, you should make sure that the lamps are in good working condition, then you need to check the converter keys and the secondary windings of the transformers.
If in diagnosing a malfunction, it is necessary to disable the inverter protection, there is a risk of failure of the power elements of the inverter, and special care is required during work, and after they are finished, it is necessary to restore the protection circuits for further safe operation of the TV by the owner in normal mode.
- The indicator blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the PE0399 motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software).
In the absence of tuning to the channels of on-air or cable television, you should make sure that the software is correct, as well as in accordance with the ratings of the supply voltage at the terminals of the TDQD4-003A tuner. It is also necessary to check the presence of pulses of data exchange between the tuner and the processor via the I2C bus using an oscilloscope.
Attention TV owners! Attempts at self-repair of TOSHIBA 47Z3030DR are not recommended by the manufacturer and can lead to serious negative consequences!

Repair MainBoard
The appearance of the MainBoard PD2131 is shown in the figure below:
PD2131
PD2131 can be used in TVs:
TOSHIBA 27WL55R (Panel V270W1-L04), TOSHIBA 37WL55R (Panel LC370WX1 (SL) (03)).
The appearance of the power supply
Main features of the TOSHIBA 47Z3030DR device:
Installed matrix (LCD panel) LC470WU2 (SL) (A1).
The matrix control uses the Timing Controller (T-CON) 6870C-0166B.
An inverter 6632L-0404A is used to power the backlight.
The necessary supply voltages for all nodes of the TOSHIBA 47Z3030DR TV are generated by the PE0401 power module or its analogs using the STR-Z4579, STR-W6765, STR-A6169, FA5501AP chips and power switches of the FP20W60C3 (PFC) type.
MainBoard - the main board (motherboard) is a PE0399 module.
The TDQD4-003A tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: LG.Philips LCD
Model: LC470WU2-SLA1
Type: a-Si TFT-LCD, Panel
Diagonal size: 47 inch
Resolution: 1920x1080, FHD
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 1039.68x584.82 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 1.07B (10-bit), CIE1931 92%
Response Time: 5 (G to G); 8 (MPRT)
Frequency: 120Hz
Lamp Type: CCFL Embedded (Inverter)
Signal Interface: LVDS (4 ch, 10-bit), 92 pins
Voltage: 12.0V

Trademark: TOSHIBA, Model: 47Z3030DR.
Short from TV: LCD, 47 ", 1920x1080, 1080p Full HD, sound: 20W, HDMI: 3.
The composition includes MainBoard PE0399 A V28A00489B1 & PE0398 V28A000491A1 and LCD-panel LC470WU2 (SL) (A1).
Power Supply Unit (PSU) PE0401 V28A00055301 & PE0473 V28A00060501 power Supply.
TOSHIBA 47Z3030DR LCD TV with LC470WU2 LCD, 47 "(119 cm) diagonal size in 16: 9 format. The ratio of maximum brightness to minimum (contrast) is 1000: 1. Dynamic contrast ratio of 15000: 1 is achieved by special control of the backlight. Design and the TV’s technical capabilities include watching broadcasts and movies in high quality HD at a resolution of 1920x1080 pixels in graphic resolution according to the standard 1080p (Full HD) .The input high-frequency or video signal can be processed in analogue systems PAL, SECAM, NTSC. Single processing and formation takes place in the digital signal standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p.
The power of the acoustic system of sound 20 W (2x10 W) provide two speakers. It uses a NICAM stereo signal processing system and Sound Surround.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x3, S-Video, component, SCART x2, RGB, VGA, HDMI x3. An output for connecting headphones is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector is used on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768, 1280x1024.
A digital tuner is capable of receiving television channels in DVB-T standards.
The power consumed by the TV in the operating mode from the network is 325 watts.
Overall dimensions: with stand 1132x765x352 mm, without stand 1132x710x147 mm.
TV Weight: with stand: 35.5 kg, without stand: 32.1 kg.
Attention! The TOSHIBA 47Z3030DR LCD TV panel LC470WU2 (SL) (A1) is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!

REPAIR / SERVICING TV TOSHIBA 47WL66RS

Technical description and composition of the TOSHIBA 47WL66RS TV, type of panel and applicable modules. The composition of the modules.
Toshiba
Model: 47WL66Rs
Panel: V470H1-L02 Rev. C4
MainBoard: PE0119 PE0216
IC MainBoard: CPU: TC90702FG, TMP86FS49AUG; Scaler: FL18538LF;
Tuner: ENG37A13GF
Specifications 47WL66R
TOSHIBA 47WL66RS
General recommendations for repairing TV LCD
Repair of the TOSHIBA 47WL66Rs TV should begin with a fault diagnosis, which involves a careful examination of the external and internal elements of the device. Specific external damage to some elements can sometimes indicate further actions to determine the malfunction of the TV and localize the defect before the necessary measurements are taken. Experienced repairmen are often aware of the causes of the defect and the possible consequences, for example, from ring cracks in the soldering of the leads of the elements, as well as from swollen capacitors or resistors burnt to coal dust and other external signs of certain malfunctions.
A malfunction of the power supply is often manifested corny - the TV does not turn on, does not make any sounds, does not light up and does not blink with any indicators. In the general case, first of all, it is necessary to check the electrolytic capacitors of the secondary rectifier filters and the fuse at the input of the network. If it is broken, then you should check for breakdown of the PN junctions of the rectifier bridge diodes and the key transistor of the converter, which can either be on a separate radiator or integrated with a PWM controller in a common chip. Possible options.
In most cases, key breakdowns in switching power supplies (SMPS) do not occur for no reason and you should look for other faulty circuit elements that could provoke a defect. This can be dried electrolytic capacitors in the primary circuit, and faulty damper elements, as well as dangling resistors or punched semiconductor elements in the stabilization circuits. Possible defective PWM chip from the manufacturer.
In cases where the TOSHIBA 47WL66RS TV has lost an image, and the sound is there and all other functions are operational, there is a possibility of an inverter (converter for powering the backlight) malfunction. When you turn on the TV, the image may appear briefly and immediately disappear. It must be borne in mind that with such manifestations, the lamps themselves also fail, the malfunction of which can be detected by replacement, by connecting to the connectors for diagnostics that are known to be serviceable and suitable in power. When disabling protection for diagnostic purposes, it must be remembered that in this case there is a risk of failure of the power elements of the inverter. Upon completion of the diagnosis, all regular protection circuits should be restored.
Repair or diagnostics of the PE0119 PE0216 motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, you should update the software (software). Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Checking or replacing CPU elements: TC90702FG, TMP86FS49AUG; Scaler: FL18538LF; It requires the necessary training and professional skills to repair modules at the component level. Problems associated with the use of BGA soldering technologies can sometimes be diagnosed by warming up.
The malfunction of the ENG37A13GF tuner is established after checking the software and all the supply voltages at its terminals. The data exchange of the tuner with the processor via the I2C bus can be controlled by an oscilloscope.

Attention to users! Self-repair of a TOSHIBA 47WL66RS TV without the appropriate qualifications and experience can lead to its complete non-repairability!

SCHEMATIC DIAGRAM  / SERVICE MANUAL   ------------------>    Toshiba 26WL66E, 26WL66T, 26WL66R, 26WL66A, 32WL66E, 32WL66T, 32WL66R, 32WL66A, 37WL66E, 37WL676T, 37WL66R. PE0117 - PE0216 - PE019

 The appearance of MainBoard PE0119 is shown in the figure below:
PE0119
PE0119 can be used in TVs:
TOSHIBA 26WL65Rs (Panel T260XW02 V.5 75002324), TOSHIBA 26WL66Zs (Panel T315XW01 V5), TOSHIBA 32WL66R (Panel T315XW01 V.5), TOSHIBA 32WL66Rs (Panel V315XW02 V.1), TOSHIBA 47WL66Rs (Panel V470H1-L02 Rev.C4), TOSHIBA 32WL65R 32WL65Rs (Panel T315XW02 V.1).
Key Features of the TOSHIBA 47WL66RS:
Installed matrix (LCD panel) V470H1-L02 Rev. C4.
The required supply voltage for all nodes of the TOSHIBA 47WL66RS TV provides a switching power supply.
MainBoard - the main board (motherboard) is a PE0119 module using CPU chips: TC90702FG, TMP86FS49AUG; Scaler: FL18538LF; and others.
The ENG37A13GF tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: CMO
Model: V470H1-L02
Type: a-Si TFT-LCD, Panel
Diagonal size: 47 inch
Resolution: 1920x1080, FHD
Display Mode: Super MVA, Normally Black, Transmissive
Active Area: 1042.56x586.44 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1200: 1
Display Colors: 16.7M (8-bit), CIE1931 75%
Response Time: 6.5 (G to G)
Frequency: 60Hz
Lamp Type: 24 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (2 ch, 8-bit), 51 pins
Voltage: 12.0 / 18.0V

 Brand: TOSHIBA, Model: 47WL66R.
Short from TV: LCD, 47 ", 1920x1080, 1080p Full HD, sound: 20 watts.
The composition includes MainBoard PE0119 PE0216 and an LCD panel (matrix) V470H1-L02 Rev. C4.
LCD TOSHIBA 47WL66R with LCD V470H1-L02, diagonal size 47 "(119 cm) 16: 9 format. The ratio of maximum brightness to minimum (contrast) is 1200: 1. The design and technical capabilities of the TV include watching programs and movies in high quality HD at a resolution of 1920x1080 pixels in graphic decomposition according to the standard 1080p (Full HD). The input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in the standards 480i, 480p, 576i, 576p, 72 0p, 1080i, 1080p.
The power of the acoustic system of sound 20 W (2x10 W) provide two speakers. It uses a NICAM stereo signal processing system and Sound Surround.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV x2, audio x4, S-Video, component x2, VGA, HDMI. An output for connecting headphones is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector is used on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768, 1280x1024.
The power consumed by the TV in the operating mode from the network is 295 watts.
Overall dimensions: with stand 1134x795x353 mm, without stand 1134x740x108 mm.
TV Weight: with stand: 50.6 kg, without stand: 45.6 kg.
Attention! The TOSHIBA 47WL66R LCD TV panel V470H1-L02 Rev. C4 is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!

REPAIR / SERVICING TV TOSHIBA 46ZV555D

Technical description and composition of the TOSHIBA 46ZV555D TV, type of panel and applicable modules. The composition of the modules.
Toshiba
Model: 46ZV555D
Chassis / Version: ZV555
Panel: LTA460HF02
Mainboard: PE0686
IC MainBoard: Li32626H T5CB5-6UK1 STA333W
Tuner: ENG37E05KF
Specifications 46ZV555DR
TOSHIBA 46ZV555D
General recommendations for repairing TV LCD
Repair of the TOSHIBA 46ZV555D TV is best started with a thorough external inspection and diagnosis of the malfunction. It is advisable to carefully examine the internal and external components. In some cases, visible external damage to the elements can suggest directions for troubleshooting and localizing the defect before starting the necessary measurements at the control points of the nodes of electronic circuits. Carbonized paint on the upper layer of resistors, electrolytic capacitors of rectifier filters swollen after boiling, cracked soldering at the terminals of heating elements or transformers can often suggest the cause of the defect and possible consequences.
If the TV does not turn on, no indicators on its front panel are lit or blinking. Also, if the TV does not respond to the remote control and buttons, does not make any sounds or any signs of operability when turned on, there is a certain probability that the power module is defective and needs repair. Sometimes with similar manifestations a problem can only occur in the absence of processor power, but this happens much less often. In this case, first of all, it is necessary to check the fuse at the mains input. If it is broken, then you should check for breakdown of the PN junctions of the rectifier bridge diodes and the key transistor of the N-FET converter, which can either be on a separate radiator or integrated with a PWM controller in a common chip. Possible options.
The reasons for the breakdown of the power switch of the flyback converter of the power module can be different, for example, a malfunction of semiconductor cells or electrolytic capacitors in the stabilization circuits of the primary circuit, as well as a failure in the operation of the PWM controller chip or breakage of the resistors in its bundle.
Diagnostics of power modules with a Power Factor Corrector (CMC) is somewhat more complicated and requires a more detailed approach.
If, when you turn on the TV, the image appears and immediately disappears, or is initially absent when you turn on, but there is sound and other functions work, there is a high probability of a malfunction of the inverter (power converter for the backlight). In such cases, the lamps, the inverter and the common power module are subject to verification, in which the electrolytic capacitors of the rectifier filter supplying the inverter should be checked.
The operation of the power circuits of the inverter and the backlight in the normal mode are controlled by special protection, which is organized for fire safety, for example, to disconnect during short circuits or breaks in high-voltage connections or when the lamps are depressurized. This protection makes it difficult to diagnose and repair the inverter.
In these cases, special care must be taken in view of the risk of failure of the power elements. After completing all repair work, it is imperative to restore the protection circuits for full and safe further operation of the TV by the user.

Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Trust the repair only to professionals with sufficient experience in the field of electronic equipment repair.

SCHEMATIC DIAGRAM  / SERVICE MANUAL   ------------------>    Toshiba 32/42/46ZV555DR PE0560 PE0597 PE0624 PE0626 PE0650 PE0668 PE0686

The appearance of MainBoard PE0686 is shown in the figure below:
PE0686
PE0686 can be used in TVs:
TOSHIBA 42ZV555D (Panel LC420WUD (SA)(B1)), TOSHIBA 46ZV555D (Panel LTA460HF02), TOSHIBA 46ZV555DR (Panel LTA460HF02 75013563).
Main features of the TOSHIBA 46ZV555D device:
Installed matrix (LCD-panel) LTA460HF02.
The required supply voltage for all nodes of the TOSHIBA 46ZV555D TV is provided by a switching power supply.
MainBoard - the main board (motherboard) is a PE0686 module using Li32626H T5CB5-6UK1 STA333W chips and others.
The ENG37E05KF tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA460HF02-W01
Type: a-Si TFT-LCD, Panel
Diagonal size: 46 inch
Resolution: 1920x1080, FHD
Display Mode: S-PVA, Normally Black, Transmissive
Active Area: 1018.08x572.67 mm
Surface: Antiglare (Haze 7%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 5000: 1
Display Colors: 1.07B (10-bit), CIE1931 90%
Response Time: 10/6 (Tr / Td); 8 (G to G)
Frequency: 120Hz
Lamp Type: 22 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (4 ch, 10-bit), 92 pins
Voltage: 12.0V


Brand: TOSHIBA, Model: 46ZV555DR.
Short from TV: LCD, 46 ", 1920x1080, 1080p Full HD, sound: 20W, HDMI: 3.
The composition uses MainBoard PE0686 and an LCD panel (matrix) LTA460HF02.
Power Supply Unit (PSU) PE0620B1 U01A 75013418 Power Supply.
TOSHIBA 46ZV555DR LCD TV with LTA460HF02 LCD, 46 "(117 cm) diagonal size in 16: 9 format. The ratio of maximum brightness to minimum (contrast) is 3000: 1. Dynamic contrast ratio of 30000: 1 is achieved by special control of the backlight. Design and the TV’s technical capabilities include watching broadcasts and movies in high quality HD at a resolution of 1920x1080 pixels in graphic resolution according to the standard 1080p (Full HD). The input high-frequency or video signal can be processed in analogue systems PAL, SECAM, NTSC. kai processing and formation takes place in the digital signal standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p.
The power of the acoustic system of sound 20 W (2x10 W) provide two speakers. It uses a NICAM stereo signal processing system and Sound Surround.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x3, S-Video, component, SCART x2, RGB, VGA, HDMI x3. An output for connecting headphones is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector is used on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768, 1280x1024, 1360x768.
A digital tuner is capable of receiving television channels in DVB-T standards.
Overall dimensions: with stand 1108x753x316 mm, without stand 1108x700x94 mm.
TV Weight: with stand: 27 kg, without stand: 24.3 kg.
Attention! The TOSHIBA 46ZV555DR LCD TV panel LTA460HF02 is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!

REPAIR / SERVICING TV TOSHIBA 46XV733R

Technical description and composition of the TOSHIBA 46XV733R TV, type of panel and applicable modules. The composition of the modules.
Toshiba
Model: 46XV733R
Panel: LTA460HJ04 T03
Power Supply (PSU): SRV2210WW
MainBoard: PE0840 A V28A001113B1
IC MainBoard: TPS54310, TPC8116, Z1094DI (AO) (8), TAS5708, D2817R, MM1852 (5), 012GN1H (5-1)
Tuner: ENG37F04KF
Specifications 46XV733
TOSHIBA 46XV733R
General recommendations for repairing TV LCD
It is advisable to start the diagnosis of a malfunction of the TOSHIBA 46XV733R TV, like all others, with an external examination of possible changes, both external and internal elements. Any external damage can sometimes prompt the repairman to take further steps to determine the malfunction of the TV and localize the defect. Swollen electrolytic or cermet capacitors, charred resistors, ring cracks in the soldered terminals of the elements - all this can significantly help the master to determine the causes and consequences of the malfunction of the TV.
Malfunctions of the SRV2210WW power module can be expressed in different ways, for example, the TOSHIBA 46XV733R does not turn on at all and the control lamps on its front panel do not light up and do not blink, there are no signs of operability. The diagnostics of the power supply should always be started by checking the fuse and, if it is broken, it is first necessary to check the rectifier bridge diodes and the power switch for the likelihood of an avalanche or thermal breakdown.
It should be remembered that the N-FET keys used in flyback converters rarely fail for no reason that must be sought by checking other elements of the circuit. Often the breakdown is caused by malfunctions of electrolytic capacitors or semiconductor elements in the primary circuit, or by a break in the resistors in the stabilization circuits. The PWM controller chip can also cause a breakdown of the power switch of the converter.
In cases where the Power Factor Corrector (PFC) is used in the power supply, troubleshooting can be a bit more complicated.
If the TOSHIBA 46XV733R does not have an image, but there is sound, there is a possibility of a malfunction of the backlight or power converter. You should also make sure that the electrolytic capacitors of the secondary rectifiers of the common power supply are working.
Diagnostics of the inverter can be difficult due to the operation of the protection, which is organized by the designers to prevent negative consequences or fires in emergency cases, for example, during short circuits or breaks in the lamp power supply circuit, as well as their possible depressurization. To make the necessary measurements at control points or to take the necessary waveforms, repairmen have to block the protection circuits in order to be able to diagnose.
When diagnosing with disabled protection, special precautions must be observed, because there is a risk of failure of the power elements of the inverter. After the diagnosis, it is imperative to restore the protection circuits for the inverter to operate normally.
If the motherboard PE0840A V28A001113B1 is faulty, first of all it is necessary to check all the linear power regulators of its chips and, if necessary, update the software. Sometimes you can check the health of MB only by replacement. In some cases, to repair the MB (SSB) board, it may be necessary to replace the chips - TPS54310, TPC8116, Z1094DI (AO) (8), TAS5708, D2817R, MM1852 (5), 012GN1H (5-1) with new or obviously working ones.
The malfunction of the ENG37F04KF tuner is established after checking the software and all the supply voltages at its terminals, including the varicap supply voltage (30-33V).

Owners and users of the TOSHIBA 46XV733R TV must remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-repairability of the device!

SCHEMATIC DIAGRAM  / SERVICE MANUAL   ------------------>    32/40/46XV733 main PE0840


 Service Manuals with Schematic Diagrams 187 pages of 2010 on models 32XV733, 37XV733, 40XV733, 46XV733

The appearance of MainBoard PE0840 is shown in the figure below:
PE0840
PE0840 can be used in TVs:
TOSHIBA 40SL733G (Panel LTA400HF12), TOSHIBA 32SL733R (Panel LTA320HF02 75018259 LCD PANEL LED), TOSHIBA 32XV733 (Panel LC320WUD (SC)(G1)), TOSHIBA 40VL733R (Panel LTA400HF12 T04), TOSHIBA 46XV733R (Panel LTA460HJ04 T03).
Key Features of the TOSHIBA 46XV733R:
Installed matrix (LCD panel) LTA460HJ04 T03.
The necessary supply voltages for all nodes of the TOSHIBA 46XV733R TV are generated by the SRV2210WW power module, or its analogs.
MainBoard - the main board (motherboard) is a PE0840 module, using TPS54310, TPC8116, Z1094DI (AO) (8), TAS5708, D2817R, MM1852 (5), 012GN1H (5-1) and others.
The ENG37F04KF tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA460HJ04
Type: a-Si TFT-LCD, Panel
Diagonal size: 46 inch
Resolution: 1920x1080, FHD
Display Mode: S-PVA, Normally Black, Transmissive
Active Area: 1018.08x572.67 mm
Surface: Antiglare (Haze 7%), Hard coating (3H)
Brightness: 450 cd / m²
Contrast Ratio: 5000: 1
Display Colors: 1.07B (8-bit + Hi-FRC), CIE1931 72%
Response Time: 6 (G to G)
Frequency: 60Hz
Lamp Type: 16 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (4 ch, 10-bit), 92 pins
Voltage: 12.0V

TOSHIBA 46XV733 LCD TV with LTA460HJ04 LCD display, 46 "(117 cm) diagonal size in 16: 9 format. 450 cd / m² screen brightness is provided by CCFL (EEFL) fluorescent lamps. Dynamic contrast ratio of 50,000: 1 is achieved by special operation control The design and technical capabilities of the TV include viewing programs and movies in high quality HD with a resolution of 1920x1080 pixels in graphic resolution according to the standard 1080p (Full HD). The input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. The startup image processing and the formation of the digital signal is in 480i standards, 480p, 576i, 576p, 720p, 1080i, 1080p Supported multimedia file formats:. MP3, JPEG.
The power of the sound system 20 W (2x10 W) provides two speakers. It uses a NICAM stereo signal processing system and Sound Surround.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), audio x2, component, SCART x2, RGB, VGA, HDMI x4, USB x2, Ethernet (RJ-45), Wi-Fi. An output for connecting headphones is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector is used on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768.
A digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C standards.
The power consumed by the TV in the operating mode from the network is 169 watts.
Overall dimensions: with stand 1108x759x329 mm, without stand 1108x700x93 mm.
TV Weight: with stand: 23.5 kg, without stand: 20.3 kg.
Attention! The TOSHIBA 46XV733 LCD TV panel LTA460HJ04 T03 is the most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!

REPAIR / SERVICING TV TOSHIBA 46XF350PR

Technical description and composition of the TOSHIBA 46XF350PR TV, type of panel and applicable modules. The composition of the modules.
Toshiba
Model: 46XF350PR 46XF350PG
Panel: LTA460HT-LH3
T-CON: 75012995 404652FHDSC4LV0.0
Inverter (backlight): SS1460HD24-M (S) REV0.2 75012994
Power Supply (PSU): PE0401 V28A000553A1 - V28A000554A0
PWM Power: STR-Z4579, STR-W6765, STR-A6169 (Standby DIP-8), FA5501AP (PFC)
MOSFET Power: FP20W60C3 (PFC)
MainBoard: PE0406 A1, PE0422 - V28A000525A, PE0400A - V28A000492A1
Tuner: ENG37E01GF
Control: Remote: CT-90288, IR: PE0406A-2 V28A000527A2
Specifications 46XF350PR
TOSHIBA 46XF350PR
General recommendations for repairing TV LCD
It is advisable to start any repair and diagnostics of the TOSHIBA 46XF350PR TV with a careful external examination of the internal and external elements, including case parts, display, buttons and cables. Any external damage can sometimes prompt the repairman to take further steps to determine the malfunction of the TV and localize the defect. Swollen electrolytic or cermet capacitors, charred resistors, ring cracks in the soldered terminals of the elements - all this can significantly help the master to determine the causes and consequences of the malfunction of the TV.
In the absence of any signs of operability, when the TOSHIBA 46XF350PR does not turn on and does not signal anything with the control lights on the panel, the PE0401C1 PE0473B1 power supply module is most likely to be faulty. In this case, first of all, it is necessary to check the fuse at the mains input. If it is broken, then you should check for breakdown of the PN junctions of the rectifier bridge diodes and the key transistor of the N-FET converter, which can either be on a separate radiator or integrated with a PWM controller in a common chip. Possible options.
It should be remembered that in the practice of repair, usually the power keys of N-Fet converters do not fail due to their poor quality and, in such cases, it is necessary to look for the cause that led to a malfunction and provoked a breakdown of the key. Most often, the culprits of the accident are dried electrolytic capacitors or dangling resistors in the primary circuit, or the PWM controller chip itself may be faulty. It is also necessary to check all the semiconductor elements of the stabilization circuit in the primary and secondary circuits.
In cases where the Power Factor Corrector (PFC) is used in the power supply, troubleshooting can be a bit more complicated.
If, when you turn on the TV, the image appears and immediately disappears, or is initially absent when you turn on, but there is sound and other functions work, there is a high probability of a malfunction of the inverter (power converter for the backlight). In such cases, the lamps, the inverter and the common power module are subject to verification, in which the electrolytic capacitors of the rectifier filter supplying the inverter should be checked.
Often, attempts to repair the SS1460HD24-M (S) REV0.2 75012994 inverter are hampered by the fact that the diagnosis of the malfunction is complicated by the operation of its protection, which is designed to turn off the inverter in emergency conditions - when the lamps are depressurized, breaks or short circuits in high-voltage connections and other emergency situations. Lock protection to localize the defect is popular among repairmen.
In such cases, special care should be taken during diagnostics, and after completion of all repair work, it is necessary to restore the circuit and the inverter protection for further safe operation of the TV.
On the PE0406A1 motherboard, in case of a malfunction, you should first check the performance of all power supply stabilizers of the microcircuits and, if necessary, update the software (software).

Owners of the 46XF350PR TV are advised to contact qualified professionals with experience for repairs! Self-repair attempts without the appropriate knowledge and skills can lead to serious negative consequences!

SCHEMATIC DIAGRAM  / SERVICE MANUAL   ------------------>    40/46XF350PR PE0282 PE0428 PE0406 PE0422 PE0400

SCHEMATIC DIAGRAM  / psu   ------------------>    PE0401 Power Supply

 The appearance of MainBoard PE0406 is shown in the figure below:
PE0406
PE0406 can be used in TVs:
TOSHIBA 40XF350PR (Panel LTA400HT-LH4), TOSHIBA 40XF355D (Panel LTA400HT-LH4), TOSHIBA 46XF350PR (Panel LTA460HT-LH3).
PSU Advanced
The PE0401 power module is made using the Power Factor Correction (PFC) scheme to eliminate multiple AC harmonics introduced into the power supply by the device. The PFC is a Step-Up Converter based on the FA5501AP PWM controller, which evenly distributes high-frequency impulses of the charging current of the electrolytic capacitor of the rectifier filter of the mains voltage over a period of 50 Hz. The current of its charge in this case will already be determined not by its reactance (usually 10-30 ohms for the network frequency), but by the elements of the converter. As a result, a change in the amplitude of the pulses (envelope) of the consumed current of the converter will repeat the shape and phase of the input sinusoidal voltage. The availability of an increased voltage (about + 380V) in the operating mode on the capacitor of the line filter indicates the serviceability of the PFC node.
The appearance of the power supply
Key Features of the TOSHIBA 46XF350PR:
Installed matrix (LCD panel) LTA460HT-LH3.
The matrix control uses the Timing Controller (T-CON) 75012995.
To power the backlight used inverter SS1460HD24-M (S).
The necessary supply voltages for all nodes of the TOSHIBA 46XF350PR TV are generated by the PE0401 power module or its analogs using the STR-Z4579, STR-W6765, STR-A6169 (Standby DIP-8), FA5501AP (PFC) microcircuits and power switches of the FP20W60C3 (PFC) type )
MainBoard - the main board (motherboard) is a PE0406 module.
The ENG37E01GF tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA460HT-LH3
Type: a-Si TFT-LCD, Panel
Diagonal size: 46 inch
Resolution: 1920x1080, FHD
Display Mode: S-PVA, Normally Black, Transmissive
Active Area: 1018.08x572.67 mm
Brightness: 500 cd / m²
Contrast Ratio: 2000: 1
Display Colors: 1.07B (10-bit), CIE1931 92%
Response Time: 8 (G to G)
Frequency: 60Hz
Lamp Type: 22 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (2 ch, 10-bit), 51 pins
Voltage: 12.0V


Trademark: TOSHIBA, Model: 46XF350PR.
Short from TV: LCD, 46 ", 1920x1080, 1080p Full HD, sound: 20W, HDMI: 3.
The composition includes MainBoard PE0406 A1, PE0422 (V28A000525A), PE0400A (V28A000492A1) and LCD panel (matrix) LTA460HT-LH3.
Power Supply Unit (PSU) PE0401 V28A000553A1 Power Supply.
TOSHIBA 46XF350PR LCD TV with LTA460HT-LH3 LCD, 46 "(117 cm) diagonal size 16: 9. The ratio of maximum brightness to minimum (contrast) is 1800: 1. Dynamic contrast ratio of 10000: 1 is achieved by special control of the backlight The design and technical capabilities of the TV provide for viewing broadcasts and films in high quality HD at a resolution of 1920x1080 pixels in graphic decomposition according to the standard 1080p (Full HD). The input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. Skye processing and the formation of the digital signal is in 480i standards, 480p, 576i, 576p, 720p, 1080i, 1080p Supported multimedia file formats:. MP3.
The power of the acoustic system of sound 20 W (2x10 W) provide two speakers. It uses a NICAM stereo signal processing system and Sound Surround.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x3, S-Video, component, SCART x2, RGB, VGA, HDMI x3. An output for connecting headphones is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector is used on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768, 1280x1024.
The power consumed by the TV in the operating mode from the network is 284 watts.
Overall dimensions: with stand 1070x713x302 mm, without stand 1070x659x135 mm.
TV Weight: with stand: 33.8 kg, without stand: 28.9 kg.
Attention! The TOSHIBA 46XF350PR's LCD panel LTA460HT-LH3 is the most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!

REPAIR / SERVICING TV TOSHIBA 42ZV635DR

Technical description and composition of the TOSHIBA 42ZV635DR TV, type of panel and applicable modules. The composition of the modules.
Toshiba
Model: 42ZV635DR
Chassis / Version: XV635
Panel: LC420WUD (SB) (M2)
T-CON: LC420WUD-SBM2 6870C-3500B
Inverter (backlight): KLS-EE42SCAN18A REV: 0.6 6632L-0532
PWM Inverter: BD9897FS
MOSFET Inverter: 1K48D 6pcs
Power Supply (PSU): 68-AL43A SRV2194WW 065284
PWM Power: MIP2F2 (Standby), R2A20113SP (PFC), SSC9500 (PWM 16pin)
MOSFET Power: K11A55D, K10A50D
MainBoard: PE0693 V28A000966B1
IC MainBoard: TMP91FW27UG, NAND: HY27US08121B, DDR: H5PS5162FFR;
Tuner: ENG37F01KF
Specifications 42ZV635D
TOSHIBA 42ZV635DR
General recommendations for repairing TV LCD
Repair of TVs, as well as other devices, it is advisable to start with an external examination. Based on visible external changes in the state of the components, it is often possible to determine the direction of the troubleshooting before making the necessary measurements. Experienced repairmen are often aware of the causes of the defect and possible consequences, for example, from ring cracks in the soldering of the leads of the elements, as well as from swollen capacitors or resistors burnt to coal dust and other external signs of certain malfunctions.
A malfunction of the power supply is often manifested corny - the TV does not turn on, does not make any sounds, does not light up and does not blink with any indicators. After checking the mains fuse and power elements of the primary power supply circuit, it should also check the absence of a short circuit in the loads of the secondary rectifiers.
If a breakdown of the power switch is detected, it should be remembered that in a switching power supply (IIP) it does not fail by itself without any reasons that should be sought by checking other elements of the primary circuit - electrolytic capacitors, PWM controller 20113, MIP2F2, which You can check only by replacement, as well as other semiconductor elements (diodes, transistors, zener diodes).
If, when you turn on the TV, the image appears and immediately disappears, or is initially absent when you turn on, but there is sound and other functions work, there is a high probability of a malfunction of the inverter (power converter for the backlight). In such cases, the lamps, the inverter and the common power module are subject to verification, in which the electrolytic capacitors of the rectifier filter supplying the inverter should be checked. If in diagnosing a malfunction, it is necessary to disable the inverter protection, there is a risk of failure of the power elements of the inverter, and special care is required during work, and after they are finished, it is necessary to restore the protection circuits for further safe operation of the TV by the owner in normal mode.
If the motherboard PE0693 V28A000966B1 is faulty, first of all it is necessary to check all the linear stabilizers and power converters of its chips, and also, if necessary, update the software (software). Sometimes you can check the health of MB only by replacement. Board repair and chip replacement TMP91FW27UG, NAND: HY27US08121B, DDR: H5PS5162FFR are carried out with the necessary equipment, and the corresponding hardware base. Faults associated with the application of BGA processor soldering technologies can be localized by the heating method.
Before replacing the ENG37F01KF tuner, if there is no tuning to the channels, you must first check the software and the supply voltage at its terminals.

Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Trust the repair only to professionals with sufficient experience in the field of electronic equipment repair.

SCHEMATIC DIAGRAM  / SERVICE MANUAL   ------------------>    Toshiba 42ZV635D PE0621 PE0693 PE0696 PE0697 PE0720     32/37/42/47/55/XV635DR/XV635DR - PE0621, PE0693, PE0696, PE0697, PE0720 Service manual and schematic diagram


 Service Manuals with Schematic Diagrams 285 pages of 2009 on models 42ZV625D, 42ZV635D, 47ZV625D, 47ZV635D, 55ZV625D, 55ZV635D.

The appearance of MainBoard PE0693 is shown in the figure below:
PE0693
PE0693 can be used in TVs:
TOSHIBA 42ZV635DR (Panel LC420WUD (SB) (M2)), TOSHIBA 32XV635DR (Panel T315HW02 V.5).
PSU Advanced
The 42ZV635DR TV is equipped with a 68-AL43A power module using the PFC (Power Factor Correction) scheme acting as an active filter to eliminate the higher harmonic components of the current consumption. The boost converter based on the PWM controller R2A20113SP does not allow the electrolytic capacitor of the input rectifier filter to be connected directly to the network directly through open diodes, when the value of the charge current determines its reactance (about 15-30 ohms at a frequency of 50 Hz). As a result of the conversion, the charging current of the capacitor will be determined in such a way that the envelope of the high-frequency pulses of the input current will repeat the phase and shape of the sine wave of the input voltage. The health check of the PFC unit is carried out by measuring the DC voltage on the capacitor of the rectifier network. In operating mode, it should be around 380V, in standby approximately 300V.
The appearance of the power supply
Main features of the TOSHIBA 42ZV635DR device:
Installed matrix (LCD panel) LC420WUD (SB) (M2).
The matrix control uses the Timing Controller (T-CON) LC420WUD-SBM2.
To power the backlight, an inverter KLS-EE42SCAN18A is used, it is controlled by the BD9897FS PWM controller. As power elements of the inverter, keys of the type 1K48D 6pcs are used.
The necessary supply voltages for all nodes of the TOSHIBA 42ZV635DR TV are generated by the 68-AL43A power supply module or its analogs using MIP2F2 (Standby), R2A20113SP (PFC), SSC9500 (PWM 16pin) microcircuits and power switches of the K11A55D, K10A50D type.
MainBoard - the main board (motherboard) is a PE0693 module using TMP91FW27UG chips, NAND: HY27US08121B, DDR: H5PS5162FFR; and others.
The ENG37F01KF tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: LG Display
Model: LC420WUD-SBM2
Type: a-Si TFT-LCD, Panel
Diagonal size: 42 inch
Resolution: 1920x1080, FHD
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 930.24x523.26 mm
Surface: Hard coating (3H), Reflection 2.0% (Max.)
Brightness: 500 cd / m²
Contrast Ratio: 1100: 1
Display Colors: 1.07B (10-bit)
Response Time: 7 (MPRT)
Frequency: 120Hz
Lamp Type: EEFL Embedded (Inverter)
Signal Interface: LVDS (4 ch, 10-bit), 92 pins
Voltage: 12.0V

TOSHIBA 42ZV635D LCD TV with LC420WUD LCD, 42 "(106 cm) diagonal display in 16: 9 format. Screen brightness of 500 cd / m² is provided by CCFL (EEFL) fluorescent lamps. Dynamic contrast ratio of 100000: 1 is achieved by special operation control The design and technical capabilities of the TV include viewing programs and movies in high quality HD with a resolution of 1920x1080 pixels in graphic resolution according to the standard 1080p (Full HD). The input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. The startup image processing and the formation of the digital signal is in 480i standards, 480p, 576i, 576p, 720p, 1080i, 1080p Supported multimedia file formats:. MP3, MPEG4, JPEG.
The power of the sound acoustic system is 20 W (2x10 W). It uses a NICAM stereo signal processing system and Sound Surround.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x3, S-Video, component, SCART x2, RGB, VGA, HDMI x4, USB. An output for connecting headphones is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector is used on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768, 1280x1024, 1360x768.
A digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C standards.
The power consumed by the TV in the operating mode from the network is 184 watts.
Overall dimensions: with stand 1058x724x329 mm, without stand 1058x665x94 mm.
TV Weight: with stand: 23 kg, without stand: 19.8 kg.
Attention! The TOSHIBA 42ZV635D's LCD panel LC420WUD (SB) (M2) is the most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!

REPAIR / SERVICING TV TOSHIBA 42ZV555D

Technical description and composition of the TOSHIBA 42ZV555D TV, type of panel and applicable modules. The composition of the modules.
Toshiba
Model: 42ZV555D
Panel: LC420WUD (SA) (B1)
T-CON: 75013102
Inverter (backlight): 75013091
Mainboard: PE0686
IC MainBoard: Li32626H T5CB5-6UK1 STA333W
Tuner: ENG37E05KF V-HBVA1G5BFB
Specifications 42ZV555DR
TOSHIBA 42ZV555D
General recommendations for repairing TV LCD
Repair of the TOSHIBA 42ZV555D must begin with the diagnosis of the malfunction and a thorough inspection of its external and internal components, including the case ones. Often, by the external signs and nature of some damage, it is possible to draw preliminary conclusions and determine a further algorithm for troubleshooting. Electrolytic capacitors of filters with a swollen casing, as well as ring cracks formed in the soldered leads of heating elements, or a layer of coal on burnt resistors sometimes tell the repairman the causes of the malfunction and possible consequences.
Sometimes the TOSHIBA 42ZV555D TV simply does not turn on. No control lights on the front panel are lit or blinking, the TV does not respond to the remote control and does not make any sounds or any signs of life when turned on. The most likely cause of the malfunction is a failure of the common power module. When repairing the power supply, it is advisable to start the diagnostics by checking the mains fuse and, in the event of an open circuit, the reason should be sought in the power semiconductor elements of the pulsed flyback converter of the main PSU. First of all, it is necessary to check the diodes of the bridge of the rectifier of the mains voltage and the power switch of the converter, which can be installed separately on the radiator, or integrated with a PWM controller.
It should be borne in mind that in the repair practice it is extremely rare that key transistors of the N-FET type fail for no reason that should be looked for by checking other components, for example, a breakdown of the key can provoke faulty elements of the damper circuits, either dried electrolytic capacitors or dangling resistors of the primary circuit of the PSU, involved in the stabilization process. In this case, all semiconductor elements of the strapping of the PWM controller chip are subject to verification, which it is desirable to verify by replacement.
When using a power factor correction unit (PFC) in the power modules, troubleshooting becomes somewhat more complicated and requires additional experience and knowledge of their operation.
If the TOSHIBA 42ZV555D TV does not have an image, but there is sound, the malfunction should be sought in the power converter of the backlight (inverter). It is also necessary to check the serviceability of the electrolytic capacitors of the filter of the secondary rectifiers of the PSU (power supply) for an overstated ESR.
When repairing the inverter 75013091, it is often necessary for diagnostics to turn off the protection, which, for the purpose of fire safety, turns it off in any emergency situation, for example, during a malfunction or uneven wear of the lamps, which makes it difficult to find a defect.
In such cases, special care should be taken during diagnostics, and after completion of all repair work, it is necessary to restore the circuit and the inverter protection for further safe operation of the TV.
In cases of attempts to repair the motherboard 3 H001 75010735, it is necessary to check the operability of the power stabilizers of the microcircuits and, if possible, update the software (software).

Attention to the owners! Attempts to self-repair the TOSHIBA 42ZV555D TV are not recommended by the manufacturer and can lead to serious negative consequences!

SCHEMATIC DIAGRAM  / SERVICE MANUAL   ------------------>    Toshiba 32/42/46ZV555DR PE0560 PE0597 PE0624 PE0626 PE0650 PE0668 PE0686

 The appearance of MainBoard PE0686 is shown in the figure below:
PE0686
PE0686 can be used in TVs:
TOSHIBA 42ZV555D (Panel LC420WUD (SA)(B1)), TOSHIBA 46ZV555D (Panel LTA460HF02), TOSHIBA 46ZV555DR (Panel LTA460HF02 75013563).
Key Features of the TOSHIBA 42ZV555D:
Installed matrix (LCD panel) LC420WUD (SA) (B1).
The matrix control uses the Timing Controller (T-CON) 75013102.
An inverter 75013091 is used to power the backlight.
The required supply voltage for all nodes of the TOSHIBA 42ZV555D TV is provided by a switching power supply.
MainBoard - the main board (motherboard) is a PE0686 module, using Li32626H T5CB5-6UK1 STA333W chips and others.
Tuner ENG37E05KF V-HBVA1G5BFB provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: LG.Philips LCD
Model: LC420WUD-SAB1
Type: a-Si TFT-LCD, Panel
Diagonal size: 42 inch
Resolution: 1920x1080, FHD
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 930.24x523.26 mm
Surface: Antiglare (Haze 13%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1200: 1
Display Colors: 1.06B (8-bit + FRC)
Response Time: 8 (MPRT)
Frequency: 120Hz
Lamp Type: EEFL Embedded (Inverter)
Signal Interface: LVDS (4 ch, 10-bit), 92 pins
Voltage: 12.0V

 TOSHIBA 42ZV555DR LCD TV with 42 "(106 cm) diagonal LCD display, 16: 9 format. The ratio of maximum brightness to minimum (contrast) is 1200: 1. Dynamic contrast ratio of 17000: 1 is achieved by special control of the backlight. Design and the TV’s technical capabilities include watching broadcasts and movies in high quality HD at a resolution of 1920x1080 pixels in graphic resolution according to the standard 1080p (Full HD) .The input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. processing and shaping of the digital signal occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p.
The power of the sound system 20 W (2x10 W) provides two speakers. It uses a NICAM stereo signal processing system and Sound Surround.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x3, S-Video, component, SCART x2, RGB, VGA, HDMI x3. An output for connecting headphones is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector is used on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768, 1280x1024, 1360x768.
A digital tuner is capable of receiving television channels in DVB-T standards.
Overall dimensions: with stand 1009x701x316 mm, without stand 1009x649x94 mm.
TV Weight: with stand: 23.5 kg, without stand: 20.8 kg.
Attention! The TOSHIBA 42ZV555DR LCD TV panel is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!