Technical description and composition of the TOSHIBA 40HL933RK TV, type of panel and applicable modules. The composition of the modules.TOSHIBA LED
Model: 40HL933RK
Chassis / Version: 32AV933
Panel: LTA400HM22 T01
LED backlight: STS400A75_56LED; LJ64-03501A / LJ07-01022A
T-CON: P25533D2J03U7 SM5142 DA1234, i7939A H228P5A
LED driver (backlight): SSL400_0E1B
PWM LED driver: SSL110SN (30)
MOSFET LED driver: SMN04L20 (3)
Trans LED driver: 0025CDC UD 123W
Power Supply (PSU): DPS-140SP - 1
PWM Power: DDA010 (Standby, S101 (6pin), SSC9502 (PWM resonant = DDA014), 1608B (PFC)
MOSFET Power: K10A60DR, K6A60DR
MainBoard: 32AV933 Rev1
IC MainBoard: MSD3704PX-LF-VW, TAS5707
Tuner: TDKT-G641D (U)
Control: Remote: CT-90326, IR 32AV933_IR BD
Specifications 40HL933
TOSHIBA 40HL933RK
General repair guidelines for TV LCD LED
The TOSHIBA 40HL933RK TV, like many other electronic devices, it is advisable to start repairing by inspecting all external and internal elements. In some cases, visible external damage to the elements can suggest the direction of troubleshooting and localization of the defect even before the start of the necessary measurements at the control points of the nodes of electronic circuits. 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.
Sometimes the TOSHIBA 40HL933RK 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 the failure of the DPS-140SP-1 common power supply module. If it is working properly, you need to check the processor batteries on the SSB (Main Board). Diagnostics and repair of the common power supply should always begin with a check of the mains fuse and the condition of the electrolytic capacitors of the secondary rectifier filters. Defective and swollen capacitors should be replaced with new ones. If the fuse is broken, it is advisable to check for a breakdown, first of all, all the power semiconductor elements of the converter and the diode bridge of the rectifier network, as well as the large electrolytic capacitor of the filter of the rectifier network.
It should be remembered that in the practice of repair, usually the power switches in switching power supplies (SMPS) 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 DDA010 P1216 PWM controller chip itself may be faulty (8). It is also necessary to check all the semiconductor elements of the stabilization circuit in the primary and secondary circuits.
In cases where the TOSHIBA 40HL933RK TV has lost an image, and the sound is there and all other functions are operational, there is a possibility of a malfunction of the LED driver (converter for powering the backlight LEDs of the LTA400HM22 T01 panel). When you turn on the TV, the image may appear briefly and disappear immediately. It must be borne in mind that with such manifestations the LEDs themselves also fail.
Often there is a need for disassembling the panel to check the health of the LEDs, as well as contact connections in the connectors and soldering.
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.
Repair or diagnostics of the 32AV933_Rev1 motherboard should be started by checking the stabilizers or power converters of its microcircuits. If necessary, you should update the software (software).
In cases of complex repairs of MB (SSB) and in the presence of the necessary skills and equipment, sometimes it may be necessary to replace its chips MSD3704PX-LF-VW, TAS5707 and other possible faulty components. Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed by the heating method.
If you suspect a malfunction of the TDKT-G641D (U) tuner, first of all, you need to make sure that the voltage of the varicaps (30-33V) is present on the corresponding output of the tuner, as well as other voltage supplying it.
Typical defect for this model:
The TV does not enter the operating mode, the red indicator on the panel lights up, the message DO NOT POWER OFF SCAN and the scan scale appear upside down. It goes from 0 to 100% and scans from 0 on a new one. And so in a circle. Sometimes it can turn on and work normally. This is a famous glitch from Winbond.
Replacing software from the official site via USB will not help. 25Q64 flashing required.
The firmware is attached, taking that from Winbond's SPI FLASH and chip must be replaced with a new one.
We recommend the owners of the 40HL933RK TV for repair only to qualified specialists with experience! Self-repair attempts without the appropriate knowledge and skills can lead to serious negative consequences!
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Toshiba 19-40/AV/LV/EL/HL/933 Main 32AV933
FIRMWARE FOR SPI FLASH -----------> TOSHIBA 40HL933RK, Main: 32AV933_Rev1, Panel: LTA400HM22 T01
SCHEMATIC DIAGRAM / psu ------------------> DPS-140SP
Service Manuals with Schematic Diagrams 53 pages 2011 on model ------------------> 19EL933RB, 19EL934RB, 23EL933RK, 23EL934RK, 26EL933B, 26EL933G, 26EL933RB, 26EL934G, 32EL933B, 32EL933G, 32EL933N, 32EL933RB, 32EL934G, 32EL934RB, 32HL933B, 32HL933G, 32HL933N, 32HL933RK, 40HL933B, 40HL933G, 40HL933N, 40HL933RK, 32AV933G, 32AV933N, 32AV933RB, 32AV934G, 32AV934RB, 32LV933G, 32LV933N, 32LV933RB, 40LV933G, 40LV933N, 40LV933RB.
The appearance of the MainBoard 32AV933 is shown in the figure below:32AV933
32AV933 can be used in TVs:
TOSHIBA 19EL934RB 19EL933RB (Panel LC185EXE-TEA1), TOSHIBA 23EL934RK 23EL933RK (Panel LTM230HT10), TOSHIBA 26EL933RB (Panel LC260EXN-SDA3 75023140), TOSHIBA 32AV933RB 32AV934RB (Panel LC320WXN-SCC1 ), TOSHIBA 32EL933RB (Panel LC320EXN SE A1 75030579 LCD PANEL LC320EXN-SEA1), TOSHIBA 32EL934RB (Panel LC320EXN SE A1), TOSHIBA 32HL933RK (Panel LTA320HN03 T03), TOSHIBA 32LV933RB (Panel T315HW04 V.4 (REV.6)), TOSHIBA 40HL933RK (Panel LTA400HM22 T01), TOSHIBA 40LV933RB (Panel LTA400HM01 ), TOSHIBA 32L2454RB 32L2453RB (Panel LC320EUJ (FF)(E2)).
PSU Advanced
According to the conditions of compliance with modern world standards for household switching power supplies, the DPS-140SP module provides for the use of a Power Factor Correction unit. The PFC circuit is a flyback converter based on the 1608B PWM controller. The reactance of an electrolytic capacitor of a line filter at a frequency of 50-60 Hz is usually not more than 20-30 ohms and its charge directly from the network through open diodes could reach tens of amperes per pulse if no filtering were applied.
As a result of the PFC conversion, an increased voltage on the capacitor (about 380V) cannot directly open the rectifier diodes, on the anode of which the voltage will always be slightly less (about 300V) and then its charging current will always be limited by the elements of the PWM controller. As a result, the envelope of the high-frequency pulses of the consumed current will repeat the shape and phase of the input sinusoidal voltage. The presence of an increased voltage (+ 380V) on the network capacitor indicates the serviceability of the PFC node.
The appearance of the power supply
Main features of the TOSHIBA 40HL933RK device:
Installed matrix (LED-panel) LTA400HM22 T01.
The matrix control uses the Timing Controller (T-CON) P25533D2J03U7.
The LED driver SSL400_0E1B is used to power the backlight LEDs, it is controlled by the SSL110SN PWM controller (30). In the converter of the LED driver, a transformer 0025CDC UD 123W is installed. As power elements of the LED driver, keys of the SMN04L20 type (3) are used.
The necessary supply voltages for all nodes of the TOSHIBA 40HL933RK TV are generated by the DPS-140SP power module or its analogs using DDA010 (Standby, S101 (6pin), SSC9502 (PWM resonant = DDA014), 1608B (PFC) microcircuits and K10A60DR power switches, K6A60DR.
MainBoard - the main board (motherboard) is a 32AV933 module, using microchips MSD3704PX-LF-VW, TAS5707 and others.
The TDKT-G641D (U) tuner provides TV reception and channel tuning.
Information from an alternative source:
TOSHIBA 40HL933RK
Panel Type (Matrix): LTA400HM22
Motherboard: 32AV933_MAIN BD REV: 1.02, MSD3704PX-LF-VW APGB987ZD, H5PS5162GFR x2, Tuner: TDTK-G641D (U)
T-con: GA_60Hz_FHD_V0.3 LJ94-25533D, LPFG041T0A-Q1, 4128BWP, SM4152 DA1215, I7939A
Invertor: SSL400_0E1B, SSL110SN
PSU: DPS-140SP-1A REV: 00, CT-90326
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA400HM22
Type: a-Si TFT-LCD, Panel
Diagonal size: 40 inch
Resolution: 1920x1080, FHD
Display Mode: S-PVA, Normally Black, Transmissive
Active Area: 885.6x498.15 mm
Surface: Antiglare (Haze 2%)
Brightness: 350 cd / m²
Contrast Ratio: 5000: 1
Display Colors: 1.07B (10-bit), CIE1931 70%
Response Time: 10 (G to G)
Frequency: 60Hz
Lamp Type: WLED Embedded (LED Driver)
Signal Interface: LVDS (2 ch, 10-bit), 51 pins
Voltage: 12.0V
Brand: TOSHIBA, Model: 40HL933.
Shortly from the TV: LCD, LED backlight, 40 ", 1920x1080, 1080p Full HD, sound: 14W, HDMI: 2.
The official Toshiba website has firmware (software update) for the models 40HL933RK (1.25.02), 40HL933N (1.25.02), 40HL933G (1.25.02), 40HL933B (1.25.02).
The composition uses MainBoard 32AV933 Rev1 and an LCD panel (matrix) LTA400HM22 T01.
Power Supply Unit (PSU) DPS-140SP - 1 Power Supply.
TOSHIBA 40HL933 LED TV with LTA400HM22 LCD, 40 "(102 cm) diagonal in 16: 9 format. The required screen brightness of 350 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 1,000,000: 1 is achieved by special control of the LEDs. V This model uses side illumination from Edge LEDs.The design and technical capabilities of the TV include viewing programs and movies in high quality HD at a resolution of 1920x1080 pixels in a graphic resolution according to the standard 1080p (Full HD). whether the video signal can be processed in analogue systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, MPEG4, Xvid, DivX, MKV, JPEG.
The power of the speaker system of sound 14 W (2x7 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, 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, 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 101 watts.
Overall dimensions: with stand 923x629x240 mm, without stand 923x562x57 mm.
TV Weight: with stand: 14.5 kg, without stand: 13.7 kg.
Attention! The panel of the TOSHIBA 40HL933 LTA400HM22 T01 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.