REPAIRING / SERVICING TV SONY KDL-50WF665

Technical description and composition of the SONY KDL-50WF665 TV, panel type and modules used. The composition of the modules.

SONY LED
Model: KDL-50WF665

Chassis / Version: MAIN BPE SONY

Panel: V500HJ4-Q01

LED backlight: LM41-00541A

LED driver (backlight): 1-982-712-11 173687911 A2201210A

PWM LED driver: BD9423EFV

MOSFET LED driver: KUS220N10 TO-252

Power Supply (PSU): Adapter 19.5V AC / DC ACDP-160

MainBoard: 1-982-629-11 173684511 A2199944B

IC MainBoard: CPU: MT5581SSEJ

Tuner: CE251ZP

Specifications KDL-50WF665
SONY KDL-50WF665
General recommendations for TV LCD LED repair
Possible manifestations of defects

- TV SONY KDL-50WF665 does not turn on at all. No response to the remote control and front panel control buttons. Indicator lamps do not light up or flash.

With such manifestations, the adapter power supply usually fails.
An external power supply Adapter 19.5V AC / DC ACDP-160 can be purchased by the owner of the TV on his own, and its repair is not always advisable, but sometimes it makes sense to open it and eliminate simple defects typical for SMPS. Then we recommend measuring its output voltages and, if they are absent, you should check the serviceability of the power switches and rectifier diodes of the converters for a possible short circuit.
In case of any breakdowns of semiconductors in the secondary circuits, the converter can usually operate normally in an emergency short circuit mode. There are no output voltages. And with a short circuit in the power elements of the primary circuit, as a rule, the mains fuse breaks and, less often, the current sensor in the source of the key.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can disable it in key mode, or provoke an excess of the maximum current or voltage values. These can be circuits supplying a PWM controller, damper or frequency setting circuits, or OOS (negative feedback) elements in the stabilization circuit. PWM controllers (PWM), in the absence of external damage and a short circuit between the terminals, are checked by replacing them with a known good one.

- There is no image, there is sound, it reacts to the remote control. Or the image may appear for a second when turned on and immediately disappear.

Usually, in such cases, there is no backlighting of the LED panel (matrix). The reason may be found in a malfunction of the LEDs, in a violation of the contact connections of the LM41-00541A LED strips, or in the provision of their power supply (LED driver).
It is impossible to detect an open circuit in the LED line without disassembling the panel with a simple multimeter. The LEDs are connected in series and a voltage of several tens of volts is required to open their junctions. Ideally, a current source is suitable for such purposes. You can open the panel and check each LED separately. Typically, Chinese multimeters lightly light up one 3-volt LED if you connect the probes to it in the forward direction (red probe to the anode, black to the cathode). For dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of the LED health. In the event of a malfunction of the LED, its zener diode will either be cut off or pierced in the K / Z.

- The indicator blinks or is on constantly, the TV does not turn on, does not respond to the remote control.

Repair or diagnostics of the 1-982-629-11 motherboard should begin with checking the stabilizers and power converters necessary to power the microcircuits and matrix. If necessary, you should update or replace the software (software). When repairing an MB board, you need to check its CPU components: MT5581SSEJ. Defective elements must be replaced. If chips with BGA soldering technology are used, the problem in its implementation is detected by local heating of the chip.

Before replacing the tuner CE251ZP, if there is no tuning to the channels, you must first check the software and the supply voltage at its outputs. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus

We remind users again! Attempts to self-repair the SONY KDL-50WF665 TV without the appropriate qualifications and necessary experience can lead to its complete non-repairability!

Additional MainBoard Repair

The appearance of MainBoard 1-982-629-11 is shown in the figure below:

1-982-629-11

Main features of the SONY KDL-50WF665 device:

Installed matrix (LED panel) V500HJ4-Q01.
The LED driver 1-982-712-11 is used to power the backlight LEDs, it is controlled by the PWM controller BD9423EFV. KUS220N10 TO-252 keys are used as power elements of the LED driver.
To power all internal units of the SONY KDL-50WF665 TV, an external adapter 19.5V AC / DC ACDP-160 type is used.
MainBoard - the main board (motherboard) is a 1-982-629-11 module, using CPU chips: MT5581SSEJ and others.
Tuner CE251ZP provides reception of television programs and tuning to channels.


Instructions and updates

Firmware update to v8.582:

File sony_tvupdate_2017_8582_enf_auth.zip, version 8.582 dated 22.06.2020 (290 409 452 bytes).

For models: KDL43WG665, KDL43WG663, KDL50WG665, KDL50WG663, KDL50WF663, KDL43WF663, KDL50WF665, KDL43WF665, KDL50WF660, KDL43WF660.

The update file and instructions can be downloaded from the manufacturer's website for the KDL-50WF665 model.

Benefits and improvements:

We fixed an issue where subtitles of some TV service providers were displayed incorrectly;
Improved overall TV stability.

Guides and instructions are also offered for this model:

Reference Manual (Web Manual). Published on 04 Apr 2018.
User manual. Published on 28 Nov 2019, size 2.43 MB.
Wall-Mount Bracket. Published on 09 Apr 2018, size 34.75 MB.
Quick setup guide and quick start guide. Published on 04 Apr 2018, size 1.89 MB.



SONY KDL-50WF665 TV with LCD V500HJ4-Q01, diagonal size 49.5 "(126 cm) 16: 9 format. The LCD panel uses Direct LED backlighting.
The V500HJ4-Q01 sensor and MainBoard 1-982-629-11 software provide viewing of broadcasts and movies in high quality HD at a resolution of 1920x1080 pixels in graphics resolution at 1080p (Full HD). Image processing is performed using modern High Dynamic Range (HDR) technology with an extended range of brightness gradations.
KDL-50WF665 TV has built-in SMART software and pre-installed Linux operating system. Internet connection can be made via Wi-Fi wireless connection. Video processor supported media file formats: MP3, WMA, MPEG4, HEVC (H.265), Xvid, DivX, MKV, JPEG.
The power of the sound speaker system is 10 W (2x5 W), provided by two speakers. Uses the NICAM stereo signal processing system and the Sound Surround function.
An external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, HDMI x2, USB x2, Ethernet (RJ-45), Wi-Fi 802.11n, Miracast. A headphone output is provided. The digital tuner is capable of receiving television channels in the DVB-T, DVB-T2, DVB-C, DVB-S, DVB-S2 standards.

The power consumed when operating from the mains is 128 W. External power supply Adapter 19.5V AC / DC ACDP-160.

Dimensions: with stand 1130x717x268 mm, without stand 1130x660x68 mm.

TV weight: with stand: 11.4 kg, without stand: 11 kg.

Attention! The panel V500HJ4-Q01 of the SONY KDL-50WF665 LED TV is the most expensive item.
Avoid impacts on the glass and excessive pressure on the screen surface to avoid damage to the LED panel!

It is unsafe for any liquid to spill on the screen. Sometimes one drop of water is enough, if it flows down the glass onto the plumes, the TV may become unrepairable (IDIOTS WASHING THE DUMB SCREEN ARE ADVISED !! !! !!).

REPAIRING / SERVICING TV SONY KDL-43WG665

Technical description and composition of the SONY KDL-43WG665 TV, panel type and modules used. The composition of the modules.

SONY LED
Model: KDL-43WG665

Chassis / Version: BPE

Panel: NS8S430CN001

LED backlight: LM41-00539A

T-CON: HV430FHB-N1K 47-6021155 HV430FHBN1K

LED driver (backlight): 1-982-711-12 A2201208B (173687812)

PWM LED driver: BD9423EFV

MOSFET LED driver: KUS220N10 TO-252

Power Supply (PSU): Adapter ACDP-085D01

MainBoard: 1-982-629-12 A2229834A (173684512)

IC MainBoard: CPU: MT5581SSEJ

Tuner: CE251ZP

Control: IR: 1-981-873-11, WiFi: DNUR-SY3 1-458-959-13

Specifications KDL-43WG665
SONY KDL-43WG665
General recommendations for TV LCD LED repair
Possible manifestations of defects

- TV SONY KDL-43WG665 does not turn on at all. Control lamps do not light up or blink. The TV on the remote control and control panel buttons does not respond.

With such manifestations, the malfunction is most likely found in the adapter power module.
The power source in this model is an external Adapter ACDP-085D01, usually the owners of TVs can purchase them on their own, and their repair may be impractical. But sometimes it is not difficult to open the unit and eliminate simple typical defects characteristic of most SMPS. Then we recommend measuring its output voltages and, if they are absent, you should check the serviceability of the 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 an emergency mode of a short circuit, and with a short circuit in the power elements of the primary circuit, the mains fuse or the current sensor at the source of the key is often cut off.
Breakdown of power switches (MosFet) in switching sources is sometimes caused by malfunctions of other circuit elements, for example, in the circuits supplying the PWM controller, frequency setting or damper, as well as in the circuits of Negative Feedback (OOS) stabilization. PWM controllers (PWM), if they do not have visible damage to the case and an outright short circuit between the terminals, are usually checked by replacing.

- There is no picture, there is sound, all other TV functions are working. When turned on, the image may sometimes appear for a second.

As a rule, in such cases there is no display backlight. Often the reason is a malfunction of the LEDs (open circuit, short circuit ...), or connectors of the strips (strings) LM41-00539A, less often the LED driver is faulty.
It is impossible to check the line of series-connected LEDs without a special current source, and it is unsafe for them to use any voltage sources above 12V for this purpose. Then all that remains is to open the panel and check each LED separately. Usually, Chinese multimeters with 9V power supply lightly light up one 3-volt LED, if you connect the probes to it in the forward direction, the red probe to the anode, and the black one to the cathode. For dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of the LED health. In the event of a malfunction of the LED, its zener diode will either be cut off, or broken through in the K / Z.

- The indicator on the front panel blinks, the TV does not turn on in operating mode, does not respond to the remote control.

Repair or diagnostics of the 1-982-629-12 motherboard should begin with checking the stabilizers and power converters necessary to power the microcircuits and matrix. If necessary, you should update or replace the software (software). Often the MB (SSB) board must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - CPU: MT5581SSEJ and replace the failed chips with new ones. Some malfunctions can be associated with the use of BGA soldering technologies in modern Main Board. Typically, such defects are detected by local heating of the chip.

If there is no reception of TV channels, but the TV is working properly from external devices, first of all, you need to check the power supply voltage of the CE251ZP tuner and update the software. I2C communication pulses must be monitored with an oscilloscope.

Attention! Users and owners of KDL-43WG665 TVs who do not have the appropriate qualifications, knowledge and experience are strongly discouraged from trying to repair themselves in order to avoid negative consequences that can lead to complete non-repairability of the device.

Additional MainBoard Repair

The appearance of MainBoard 1-982-629-12 is shown in the figure below:

1-982-629-12

Main features of the SONY KDL-43WG665 device:

Installed matrix (LED panel) NS8S430CN001.
Matrix control uses the HV430FHB-N1K Timing Controller (T-CON).
The LED driver 1-982-711-12 is used to power the backlight LEDs, it is controlled by the PWM controller BD9423EFV. KUS220N10 TO-252 keys are used as power elements of the LED driver.

To power all internal components of the SONY KDL-43WG665 TV, an external adapter type Adapter ACDP-085D01 is used.
MainBoard - the main board (motherboard) is a 1-982-629-12 module, using CPU chips: MT5581SSEJ and others.
Tuner CE251ZP provides reception of television programs and tuning to channels.



Instructions and updates

Firmware update to v8.582:

File sony_tvupdate_2017_8582_enf_auth.zip, version 8.582 dated 22.06.2020 (290 409 452 bytes).

For models: KDL43WG665, KDL43WG663, KDL50WG665, KDL50WG663, KDL50WF663, KDL43WF663, KDL50WF665, KDL43WF665, KDL50WF660, KDL43WF660.

The update file and instructions can be downloaded from the manufacturer's website for the KDL-43WG665 model.

Benefits and improvements:

We fixed an issue where subtitles of some TV service providers were displayed incorrectly;
Improved overall TV stability.

Guides and instructions are also offered for this model:

Reference Manual (Web Manual). Published on 29 Nov 2019.
Other. Published on 28 Nov 2019, size 276 KB.
Directory. Published on 21 Apr 2019, size 1.42 MB.
Other. Published on 07 Apr 2019, size 34.87 MB.
Quick setup guide and quick start guide. Published on 07 Apr 2019, size 1.77 MB.


SONY KDL-43WG665 TV with LCD NS8S430CN001, 42.8 "(109 cm) diagonal 16: 9 format. The LCD panel uses Direct LED backlighting.
The NS8S430CN001 matrix and MainBoard 1-982-629-12 software provide viewing of broadcasts and movies in high quality HD at a resolution of 1920x1080 pixels in graphics resolution in 1080p (Full HD). Image processing is performed using modern High Dynamic Range (HDR) technology with an extended range of brightness gradations.
KDL-43WG665 TV has built-in SMART software and pre-installed Linux operating system. Internet connection can be made via Wi-Fi wireless connection. Video processor supported media file formats: MP3, WMA, HEVC (H.265), Xvid, MKV, JPEG.
The power of the sound speaker system is 10 W (2x5 W), provided by two speakers. Uses the NICAM stereo signal processing system and the Sound Surround function.
An external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, HDMI x2, USB x2, Ethernet (RJ-45), Wi-Fi 802.11n, Miracast. A headphone output is provided. The digital tuner is capable of receiving television channels in the DVB-T, DVB-T2, DVB-C, DVB-S, DVB-S2 standards.

The power consumed when operating from the mains is 81 W. External power supply Adapter ACDP-085D01.

Dimensions: with stand 974x628x268 mm, without stand 974x572x68 mm.

TV weight: with stand: 8.2 kg, without stand: 7.8 kg.

Attention! The panel NS8S430CN001 of the SONY KDL-43WG665 LED TV is the most expensive item.
Avoid impacts on the glass and excessive pressure on the screen surface to avoid damage to the LED panel!
It is unsafe for any liquid to spill on the screen. Sometimes one drop of water is enough, if it flows down the glass onto the plumes, the TV may become unrepairable.

REPAIRING / SERVICING TV SONY KD-55XF9005

 Technical description and composition of the SONY KD-55XF9005 TV, panel type and modules used. The composition of the modules.

SONY LED
Model: KD-55XF9005

Chassis / Version: MAIN BM2A

Panel: YD8S007DND01B // LSY550FF04-A01

LED backlight: CCB 55 MBL-55030D915SN1, MBL-55030D915SN0

T-CON: 18Y_SHU11A2H2A4V0.0 LMY550FF04-B

LED driver (backlight): 1-983-107-31 173702831

Power Supply (PSU): APS-419 1-983-329-11

PWM Power: PFC, PWM

MOSFET Power: N-FET TO-220F

MainBoard: 1-983-249-31 YA03031AB

IC MainBoard: CPU, Scaler, eMMC, AUDIO, DC / DC

Tuner: CE553ZP

Control: WiFi: 1-458-998-11 J20H088

Specifications KD-55XF9005
SONY KD-55XF9005
General recommendations for TV LCD LED repair
Possible malfunctions

- TV SONY KD-55XF9005 does not turn on and does not give any signs of turning on, does not respond to control buttons and to the remote control.

In some of these cases, the main switching power supply, the APS-419 module, is faulty. Its output voltages should be measured and, in their absence, the serviceability of the power switches (N-FET TO-220F) and rectifier diodes in the converters should be checked for possible breakdown.
In case of any breakdowns in the secondary circuits, the converter can operate in an emergency mode of a short circuit, and with a short circuit in the power elements of the primary circuit, the mains fuse or the current sensor at the source of the key is often cut off.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can disable it in key mode, or provoke an excess of the maximum current or voltage values. These can be circuits supplying a PWM controller, damper or frequency setting circuits, or OOS (negative feedback) elements in the stabilization circuit. PWM controllers (PWM) PFC, PWM, in the absence of external damage and short circuit between the terminals, are checked by replacing them with a known good one.

- There is no image, the screen is black, there is sound, sometimes you can see barely noticeable outlines of the image in the ambient light of the screen.

In such cases, the most likely malfunction of the LED panel backlighting elements. Often the reason is a malfunction of the LEDs (open circuit, short circuit ...), or the connectors of the strips (strings) CCB 55 MBL-55030D915SN1, MBL-55030D915SN0, less often the LED driver turns out to be faulty.
To check the LED strips for breakage without disassembling the panel, for example, a current source will help. It is impossible to open series-connected PN junctions with a simple multimeter; a voltage of the order of several tens of volts is required.

- The indicator blinks or is on constantly, the TV does not turn on, does not respond to the remote control.

Repair or diagnostics of the motherboard 1-983-249-31 should begin with checking the stabilizers and power converters required to power the microcircuits and matrix. If necessary, you should update or replace the software (software). When repairing an MB board, it is necessary to check its components CPU, Scaler, eMMC, AUDIO, DC / DC. Defective elements must be replaced. If chips with BGA soldering technology are used, the problem in its implementation is detected by local heating of the chip.

In cases where there is no tuning for terrestrial or cable TV channels, you should make sure that the software is correct, as well as that the supply voltages on the CE553ZP tuner outputs match. It is also necessary to check with an oscilloscope the presence of pulses of data exchange between the tuner and the processor via the I2C bus.

Users and owners of TVs should remember that attempts to self-repair a SONY KD-55XF9005 TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!

Additional MainBoard Repair

The appearance of MainBoard 1-983-249-31 is shown in the figure below:

1-983-249-31

External view of the power supply

APS-419:

APS-419

The main features of the SONY KD-55XF9005 device:

Installed matrix (LED panel) YD8S007DND01B or LSY550FF04-A01.
Matrix control uses Timing Controller (T-CON) 18Y_SHU11A2H2A4V0.0.
The LED driver 1-983-107-31 is used to power the backlight LEDs.
The formation of the necessary supply voltages for all nodes of the SONY KD-55XF9005 TV is carried out by the APS-419 power module, or its analogues using PFC, PWM microcircuits and power switches of the N-FET TO-220F type.
MainBoard - the main board (motherboard) is a 1-983-249-31 module using CPU, Scaler, eMMC, AUDIO, DC / DC and others.
Tuner CE553ZP provides reception of television programs and tuning to channels.


Instructions and updates

Firmware update to version 6.6555:

File sony_dtvota_2016_1606555100_eua_auth.zip, version 6.6555 dated 04/22/2020 (1 886 350 011 bytes).

For models: KD43XG8305, KD49XG8305, KD49XG8377, KD43XG8388, KD49XG8388, KD43XG8396, KD49XG8396, KD43XG8399, KD49XG8399, KD49XG9005, KD55AG8, KD65AG8, KD43XG8096, KD49XG8096, KD55XG8096, KD65XG8096, KD75XG8096, KD43XG8196, KD49XG8196, KD55XG8196, KD65XG8196, KD65AF8, KD55AF8, KD75XF9005, KD65XF9005, KD55XF9005, KD49XF9005, KD65XF8796, KD55XF8796, KD49XF8796, KD43XF8796, KD65XF8599, KD55XF8599, KD49XF8599, KD43XF8599, KD85XF8596, KD75XF8596, KD65XF8596, KD55XF8596, KD49XF8596, KD43XF8596, KD65XF8588, KD55XF8588, KD49XF8588, KD43XF8588, KD65XF8577, KD55XF8577, KD49XF8577, KD43XF8577, KD65XF8505, KD55XF8505, KD49XF8505, KD43XF8505, KD70XF8305, KD60XF8305, KD55XF8096, KD49XF8096, KD43XF8096, KD65XF7596, KD55XF7596, KD49XF7596, KD43XF7596, KDL49WF805, KDL43WF805, KDL49WF804, KDL43WF804, KD77A1, KD65A1, KD55A1, KD75XE9405, KD65XE9305, KD55XE9305, KD75XE9005, KD65XE9005, KD55XE9005, KD49XE9005, KD75XE8596, KD65XE8599, KD65XE8596, KD65XE8588, KD65XE8577, KD65XE8505, KD55XE8599, KD55XE8596, KD55XE8588, KD55XE8577, KD55XE8505, KD55XE8396, KD55XE8096, KD49XE8396, KD49XE8099, KD49XE8096, KD49XE8088, KD49XE8077, KD49XE8005, KD49XE8004, KD43XE8396, KD43XE8099, KD43XE8096, KD43XE8077, KD43XE8005, KD43XE8004, KD100ZD9, KD75ZD9, KD65ZD9, KD49XD8305, KD43XD8305, KD55XD8005, KD49XD8005, KD43XD8005, KD49XD8077, KD43XD8077, KD49XD8088, KD43XD8088, KD49XD8099, KD43XD8099, KD65XD7504, KD65XD7505, KD55XD7004, KD49XD7004, KD55XD7005, KD49XD7005, KD50SD8005.

The update file and instructions can be downloaded from the manufacturer's website for the KD-55XF9005 model.

Benefits and improvements of the latest update:

Improved TV turn-on time when exiting standby mode.

Guides and instructions are also offered for this model:

Reference Manual (Web Manual). Published on 13 Feb 2019.
Quick Setup Guide and Quick Start Guide. Published on 14 Aug 2019, size 817 KB.
Wall-Mount Bracket. Published on 13 Apr 2018, size 37.63 MB.
Directory. Published on 26 Mar 2018, size 4.07 MB.


SONY KD-55XF9005 TV with LCD LSY550FF04-A01, diagonal size 54.6 "(139 cm) 16: 9 format. The required screen brightness of 600 cd / m² is provided by LED backlighting. The ratio of maximum brightness to minimum (contrast) is 6000 : 1. The LCD panel uses Direct LED backlighting.
LSY550FF04-A01 sensor and MainBoard 1-983-249-31 software are capable of realizing images in the highest UHD quality at a resolution of 3840x2160 pixels in 4K UHD, HDR. Image processing is performed using modern High Dynamic Range (HDR) technology with an extended range of brightness gradations.
KD-55XF9005 TV has built-in SMART software and pre-installed Android Operating System. Internet connection can be made via Wi-Fi wireless connection. Video processor supported media file formats: MP3, WMA, MPEG4, HEVC (H.265), Xvid, DivX, MKV, JPEG.
The power of the sound speaker system is 20 W (2x10 W), provided by two speakers. Uses the NICAM stereo signal processing system and the Sound Surround function.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, HDMI x4, USB x3, Ethernet (RJ-45), Bluetooth, Wi-Fi 802.11ac, Miracast. A headphone output is provided. The digital tuner is capable of receiving television channels in the DVB-T, DVB-T2, DVB-C, DVB-S, DVB-S2 standards.

The power consumed when operating from the mains is 245 W. APS-419 power supply.

Dimensions: with stand 1228x771x268 mm, without stand 1228x706x69 mm.

TV weight: with stand: 19.1 kg, without stand: 18.2 kg.

Attention! The panel LSY550FF04-A01 of the SONY KD-55XF9005 LED TV is the most expensive element.
Avoid impacts on the glass and excessive pressure on the screen surface to avoid damage to the LED panel!
It is unsafe for any liquid to spill on the screen. Sometimes one drop of water is enough, if it flows down the glass onto the plumes, the TV may become unrepairable.

REPAIRING / SERVICING TV SONY KD-55XD9305

Technical description and composition of the SONY KD-55XD9305 TV, panel type and modules used. The composition of the modules.

SONY LED
Model: KD-55XD9305

Chassis / Version: GN2SK

Panel: YD6S550STD01

T-CON: 16Y_BS_GU13TSTLTA4V0.1

LED driver (backlight): 1-980-833-11 (173612611) & 1-982-656-11 (173685211) A2195346A

Power Supply (PSU): Adapter 24V 9.4A 200W

MainBoard: 1-980-833-11 (173612611)

IC MainBoard: CPU, DRAM, eMMC, DC / DC

Tuner: CE541ZP

Control: IR: 1-980-818-12, WiFi: J20H084AC AK8J20H084AC

Specifications KD-55XD9305
SONY KD-55XD9305
General recommendations for TV LCD LED repair
Possible manifestations of defects

- SONY KD-55XD9305 does not turn on, does not respond to buttons and the remote control, indicators on the front panel do not light or flash.

In some of these cases, the problem is found in the adapter power supply module.
The power source in this model is an external Adapter 24V 9.4A 200W, usually the owners of TVs can purchase them on their own, and their repair may be impractical. But sometimes it is not difficult to open the unit and eliminate simple typical defects characteristic of most SMPS. Its output voltages should be measured and, in their absence, the power switches and rectifier diodes should be checked for the probability of a short circuit in the converters.
In case of breakdowns of semiconductors in the secondary circuits, the converter can usually work in an emergency in the short-circuit mode, and in case of a short circuit in the power elements of the primary circuit, the mains fuse often breaks.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can disable it in the key mode, or provoke an excess of the maximum current or voltage values. These can be circuits supplying the PWM controller, damper or frequency setting circuits, or OOS (negative feedback) elements in the stabilization circuit. PWM controllers (PWM), in the absence of external damage and a short circuit between the terminals, are checked by replacing them with a known good one.

- There is no image, there is sound, it reacts to the remote control. Or, immediately after switching on for a second, the image may appear and immediately disappear.

Usually, in such cases, there is no backlighting of the LED panel (matrix). Usually the cause of the malfunction is in the breakage of the LEDs, or in the connectors of the LED strips, but sometimes the LED driver is also faulty.
It should be remembered that it is not possible to determine an open circuit in the LED lines without disassembling the panels using a tester or multimeter without an additional device, for example, a current source. To open all PN junctions connected in series at once, a voltage of several tens of volts may be required. Then you need to open the panel and check each LED separately with a multimeter. If the capabilities of your multimeter do not allow you to open the LED in the forward direction or dual LEds are used, then the PN-transition of the emergency zener diode can indirectly serve as an indicator of serviceability. In the event of a malfunction of the LED-a, the PN-junction of the Zener diode will either be cut off or broken through in the SC.

In cases where the SONY KD-55XD9305 does not have a picture, but there is sound, the display backlight often does not work.
In LED TVs, the LEDs inside the YD6S550STD01 panel are usually faulty, and less often the LED driver.
Without backlighting, sometimes you can see a barely noticeable image with a certain successful hit of external light on the screen.

Replacing the LEDs requires disassembling the YD6S550STD01 panel. We do not recommend such works on their own to TV owners and craftsmen who do not have experience in repairing LCD panels, especially at home.

If there is no image, and the backlight is on, the screen becomes slightly lighter when turned on, and on an open TV, the light is visible through the holes in the panel case.
In this case, the T-CON (Timing Controller) board may be faulty, but often the MainBoard 1-980-833-11 is also faulty. A software failure is also possible. The panel can also be faulty - damage to strips, loops, for example, after moisture. In such cases, first of all, it is necessary to check the panel supply voltage at the LVDS connector, fuses on the T-CON board or panel brackets, as well as supply and reference voltages for column and line drivers - VGH, VGL, Vcom.
If they are within the normal range, then the oscilloscope must track the passage of LVDS signals from MainBoard 1-980-833-11, as well as synchronizing signals to loops with drivers.

Flooded screens of LED TVs can sometimes be repaired if no significant damage has formed in the loops and on the panel trims.

- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals the standby mode.

Repair or diagnostics of the 1-980-833-11 motherboard should begin with checking the stabilizers and power converters necessary to power the microcircuits and matrix. If necessary, you should update or replace the software (software). If it is not possible to replace the MB (SSB) board, it is necessary to check the health of its elements - CPU, DRAM, eMMC, DC / DC. Defective components must be replaced.

Before replacing the tuner CE541ZP, if there is no tuning to the channels, you must first check the software and the supply voltage at its outputs. You also need to make sure that the tuner and processor can exchange data via the I2C bus

Attention to TV owners! Attempts to repair SONY KD-55XD9305 by yourself are not recommended by the manufacturer and can lead to serious negative consequences!

DOWNLOAD SCHEMATIC DIAGRAM  / SERVICE MANUAL   ------------------>   GN2SK CHASSIS  FOR MODELS: KD-55XD9305, KD-65XD9305    


Additional MainBoard Repair

The appearance of MainBoard 1-980-833-11 is shown in the figure below:

 

1-980-833-11

Main features of SONY KD-55XD9305 device:

The matrix (LED panel) YD6S550STD01 is installed.
Matrix management uses Timing Controller (T-CON) 16Y_BS_GU13TSTLTA4V0.1.
The LED driver 1-980-833-11 is used to power the backlight LEDs.
To power all internal components of the SONY KD-55XD9305 TV, an external adapter 24V 9.4A 200W is used.
MainBoard - the main board (motherboard) is a 1-980-833-11 module, using CPU, DRAM, eMMC, DC / DC and others.
Tuner CE541ZP provides reception of television programs and tuning to channels.


Instructions and updates

Firmware update to version 5.435:

File sony_tvupdate_2015_5435_eub_auth.zip, version 5.435 dated 06/26/2019 (1 644 778 348 bytes).

For models: KD-75XD9405, KD-65XD9305, KD-55XD9305, KD-85XD8505, KD-75XD8505, KD-65XD8505, KD-65XD8577, KD-65XD8599, KD-55XD8505, KD-55XD8577, KD-55XD8588, KD-55XD8599, KD-65SD8505, KD-55SD8505, KD-75X9405C, KD-65X9305C, KD-55X9305C, KD-75X9105C, KD-65X9005C, KD-55X9005C, KD-75X8501C, KD-75X8505C, KD-65X8501C, KD-65X8505C, KD-65X8507C, KD-65X8508C, KD-65X8509C, KD-55X8501C, KD-55X8505C, KD-55X8507C, KD-55X8508C, KD-55X8509C, KD-49X8301C, KD-49X8305C, KD-49X8307C, KD-49X8308C, KD-49X8309C, KD-43X8301C, KD-43X8305C, KD-43X8307C, KD-43X8308C, KD-43X8309C, KD-55X8005C, KD-49X8005C, KD-65S8505C, KD-55S8505C, KD-65S8005C, KD-55S8005C.

The update file and instructions can be downloaded from the manufacturer's website for the KD-55XD9305 model.

Benefits and improvements of the latest update:

Latest Android security updates.

Guides and instructions are also offered for this model:

Reference Manual (Web Manual). Published on 22 Jul 2019.
Reference Manual (Web Manual). Published on 22 Feb 2017.
Directory. Published on 17 Feb 2017, size 6.9 MB.
Wall-Mount Bracket. Published on 29 May 2016, size 38.45 MB.
Quick Setup Guide and Quick Start Guide. Published on 19 Feb 2016, size 3.54 MB.
Installation Guide - Wall-Mount Bracket. Published on 15 Jan 2016, size 665 KB.


SONY TV KD-55XD9305 with LCD YD6S550STD01, 55 "(140 cm) diagonal, 16: 9 format. This model uses Edge LED side illumination.
There is support for 3D images with active (shutter) separation technology of the right and left channels.
YD6S550STD01 sensor and MainBoard 1-980-833-11 main board software are capable of realizing images in the highest UHD quality at 3840x2160 pixels in 4K UHD, HDR standard. Image processing is performed using modern High Dynamic Range (HDR) technology with an extended range of brightness gradations.
KD-55XD9305 TV has built-in SMART software and pre-installed Android TV operating system. Internet connection can be made via Wi-Fi wireless connection. The input analog video signal can be processed in PAL, SECAM, NTSC systems. Graphic processing and formation of a digital signal picture occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p, 2160p. Video processor supported media file formats: MP3, WMA, MPEG4, MKV, JPEG.
Sound speaker power of 30 W (4x7.5 W) is provided by 4 speakers. Uses the NICAM stereo signal processing system and the Sound Surround function.
An external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, component, SCART, HDMI x4, USB x3, Ethernet (RJ-45), Bluetooth, Wi-Fi 802.11n, Miracast. A headphone output is provided. To connect an analog computer or laptop to this TV model, a VGA (D-Sub 15) connector is used, which supports resolutions: 640x480, 800x600, 1024x768, 1280x1024, 1360x768, 1920x1080, 3840x2160. The digital tuner is capable of receiving television channels in the DVB-T, DVB-T2, DVB-C, DVB-S, DVB-S2 standards.

The power consumed when operating from the network is 217 W. External power supply Adapter 24V 9.4A 200W.

Dimensions: with stand 1239x769x261 mm, without stand 1239x717x36 mm.

TV weight: with stand: 24.9 kg, without stand: 22 kg.

Attention! The YD6S550STD01 panel of SONY KD-55XD9305 LED TV is the most expensive item.
Avoid impacts on the glass and excessive pressure on the screen surface to avoid damage to the LED panel!
It is unsafe for any liquid to spill on the screen. Sometimes one drop of water is enough, if it flows down the glass onto the plumes, the TV may become unrepairable. 

REPAIRING / SERVICING TV SONY KDL-32WE613

Technical description and composition of the SONY KDL-32WE613 TV, panel type and modules used. The composition of the modules.

SONY LED
Model: KDL-32WE613

Chassis / Version: MAIN BLM SONY

Panel: IS7S320HN001

LED backlight: 4-596-427 17Y 32_7020_32_REV01_170316

LED driver (backlight): 1-981-455-11 (173638611)

PWM LED driver: BD9423EFV

MOSFET LED driver: D2910

Power Supply (PSU): Adapter 19.5V AC / D ACDP-060L01

MainBoard: 1-981-541-23 (173641423)

IC MainBoard: CPU: MEDIATEK

Tuner: DE251ZP

KDL-32WE613 Specifications
SONY KDL-32WE613
General recommendations for TV LCD LED repair
Possible manifestations of defects

- TV SONY KDL-32WE613 does not turn on and does not give any signs of turning on, does not respond to control buttons and to the remote control.

In such cases, you should start looking for a fault in the adapter power supply circuits.
The TV model under consideration is equipped with an external power supply Adapter 19.5V AC / D ACDP-060L01, the repair of which is not always advisable, but opening it and eliminating the simplest typical defects typical of modern SMPS is usually not difficult for a qualified technician. It is necessary to measure the output voltages in its secondary circuits, and if they are completely absent, the serviceability of the power switches and rectifier diodes should be checked for a possible breakdown (short circuit).
In case of breakdowns in the secondary circuits of the converter, it can usually work in an emergency mode in a short circuit mode, and with a short circuit in the power elements of the primary circuit, the mains fuse or current sensor in the source of the key is most often cut off.
Mos-Fet power switches used in switching power supplies sometimes fail due to a malfunction of any other elements that can disable it in the key mode, or create an excess of the maximum permissible key parameters. These can be elements supplying a PWM regulator, frequency setting or damper circuits, or elements of negative feedback in the stabilization circuit. PWM controllers, in the absence of visible damage or outright short circuits between the terminals, are checked by replacing them with new ones, or knowingly working properly.

- No picture, sound, all other TV functions are working. When turned on, the image may sometimes appear for a second.

A malfunction is usually in these cases most likely in the backlight units of the display matrix. The reason may be found in a malfunction of the LEDs, in a violation of the contact connections of the LED strips 4-596-427 17Y 32_7020_32_REV01_170316, or in providing their power supply (LED driver).
It is impossible to check the LED bars for a break without disassembling the panel with a multimeter or tester. For these purposes, it is necessary to open all series-connected PN junctions and a voltage of the order of tens of volts is required, and ideally a current source. Having disassembled the panel, it is necessary to check each LED separately. Chinese multimeters tend to light one 3-volt LED in the forward direction. In the case of using dual 6-volt LEDs, the PN junction of its protective zener diode can serve as an indicator of serviceability. In faulty LEDs, the zener diode will either be cut off, or pierced in the K / Z.

- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals the standby mode.

Repair or diagnostics of the 1-981-541-23 motherboard should begin with checking the stabilizers and power converters required to power the microcircuits and matrix. If necessary, you should update or replace the software (software). In some cases, to repair the MB (SSB) board, it may be necessary to replace the chips - CPU: MEDIATEK with new or known good ones. In cases where BGA technologies are used, defects are usually localized by heating.

Before replacing the DE251ZP tuner, if there is no tuning to the channels, you must first check the software and supply voltage at its outputs. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus

Owners and users of the SONY KDL-32WE613 TV should 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!

Additional MainBoard Repair

The appearance of MainBoard 1-981-541-23 is shown in the figure below:

1-981-541-23

Main features of the SONY KDL-32WE613 device:

Installed matrix (LED panel) IS7S320HN001.
The LED driver 1-981-455-11 is used to power the backlight LEDs, it is controlled by the PWM controller BD9423EFV. D2910 keys are used as power elements of the LED driver.
An external adapter 19.5V AC / D ACDP-060L01 is used to power all the internal components of the SONY KDL-32WE613 TV.
MainBoard - the main board (motherboard) is a 1-981-541-23 module, using CPU chips: MEDIATEK and others.
The DE251ZP tuner provides reception of television programs and tuning to channels.


Instructions and updates

Firmware update to v8.582:

File sony_tvupdate_2017_8582_enf_auth.zip, version 8.582 dated 22.06.2020 (290 409 452 bytes).

For models: KDL49WE753, KDL43WE753, KDL49WE663, KDL49WE665, KDL40WE663, KDL32WE613, KDL49WE755, KDL43WE755, KDL40WE665, KDL32WE615, KDL49WE750, KDL43WE750, KDL49WE660, KDL40WE660, KDL32WE610, KDL49WE754, KDL43WE754.

The update file and instructions can be downloaded from the manufacturer's website for the KDL-32WE613 model.

Benefits and improvements:

Fixed an issue where subtitles of some TV service providers were displayed incorrectly;
Improved overall TV stability.

Guides and instructions are also offered for this model:

Reference Manual (Web Manual). Published on 04 Apr 2018.
User manual. Published on 28 Nov 2019, size 1.95 MB.
Quick setup guide and quick start guide. Published on 11 Sep 2019, size 707 KB.
Wall-Mount Bracket. Published on 22 Nov 2017, size 39.47 MB.


SONY TV KDL-32WE613 with LCD HV320WHB-N5K, 31.5 "(80 cm) 16: 9 aspect ratio. This model uses Edge LED side illumination.
The HV320WHB-N5K sensor and MainBoard 1-981-541-21 software provide high quality HD viewing at 1366x768 pixels and 720p (HD Ready). Image processing is performed using modern High Dynamic Range (HDR) technology with an extended range of brightness gradations.
KDL-32WE613 TV has built-in SMART software and pre-installed Opera TV Operating System. Internet connection can be made via Wi-Fi wireless connection. Video processor supported media file formats: MP3, WMA, MPEG4, HEVC (H.265), Xvid, MKV, JPEG.
The power of the sound speaker system is 10 W (2x5 W), provided by two speakers. Uses the NICAM stereo signal processing system and the Sound Surround function.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), HDMI x2, USB x2, Ethernet (RJ-45), Wi-Fi 802.11n, Miracast. A headphone output is provided. The digital tuner is capable of receiving television channels in the DVB-T, DVB-T2, DVB-C standards.

The power consumed when operating from the network is 60 W. External power supply ACDP-060L01 Adapter 19.5V.

Dimensions: with stand 731x490x187 mm, without stand 731x442x70 mm.

TV weight: with stand: 6.2 kg, without stand: 5.8 kg.

Attention! The HV320WHB-N5K panel of the SONY KDL-32WE613 LED TV is the most expensive item.
Avoid impacts on the glass and excessive pressure on the screen surface to avoid damage to the LED panel!

It is unsafe for any liquid to spill on the screen. Sometimes one drop of water is enough, if it flows down the glass onto the plumes, the TV may become unrepairable.  

REPAIRING / SERVICING TV SONY KDL-55EX720

Technical description and composition of the SONY KDL-55EX720 TV, panel type and modules used. The composition of the modules.

SONY LED
Model: KDL-55EX720

Chassis / Version: AZ2F

Panel: LTY550HJ03

LED driver (backlight): 1-883-300-11

PWM LED driver: BD9276EFV

Power Supply (PSU): APS-299 1-883-922-12 & DPS78

PWM Power: CXA3811M, CXA3799AM, MIP2H2

MOSFET Power: N-FET TO-220F

MainBoard: 1-883-753-32 Y2009380A

IC MainBoard: CXD4727GB, K4B2G1646C-HCH9, KFM2GN6Q2B, Y164B, NJU72040, Sil9287BCNU, GL850G

Tuner: CXD2825GA

Specifications KDL-55EX720
SONY KDL-55EX720
General recommendations for TV LCD LED repair
Possible malfunctions

- TV SONY KDL-55EX720 does not turn on at all. No response to the remote control and front panel control buttons. Indicator lamps do not light up or flash.

Most likely, in this case, the main switching power supply (SMPS) APS-299 is faulty. Then we recommend measuring its output voltages and, if they are absent, you should check the serviceability of the power switches (N-FET TO-220F) and the rectifier diodes of the converters for a possible short circuit.
In case of diode breakdowns in the secondary circuits, the converter can operate in an emergency mode of short circuit without output voltages, and with a short circuit in the power elements of the primary circuit, the mains fuse and / or the current sensor in the source of the key usually breaks off.
Mos-Fet power switches used in switching power supplies sometimes fail due to a malfunction of any other elements that can disable it in the key mode, or create an excess of the maximum permissible key parameters. These can be elements supplying a PWM regulator, frequency setting or damper circuits, or elements of negative feedback in the stabilization circuit. PWM controllers CXA3811M, CXA3799AM, MIP2H2, in the absence of visible damage or outright short circuits between the terminals, are checked by replacing them with new ones, or known to be working properly.

- There is no image, the screen is black, there is sound, sometimes you can see barely noticeable outlines of the image in the ambient light of the screen.

Most likely in these cases is a malfunction of the LED panel backlight. Often the cause of a malfunction is a lack of current in the LED circuit, for example, their open or short circuit, or a violation of the contact connections of the connectors of the strips.
It is impossible to detect an open circuit in the LED line without disassembling the panel with a simple multimeter. The LEDs are connected in series and a voltage of several tens of volts is required to open their junctions. Ideally, a current source is suitable for such purposes. You can open the panel and check each LED separately. Usually, Chinese multimeters lightly light up one 3-volt LED if you connect the probes to it in the forward direction (red probe to the anode, black to the cathode). For dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of the LED health. In the event of a malfunction of the LED, its zener diode will either be cut off, or broken through in the K / Z.

In cases where the SONY KDL-55EX720 does not have an image, but there is sound, the display backlight often does not work.
In LED TVs, the LEDs inside the LTY550HJ03 panel are usually faulty, and less often the LED driver.
Without backlighting, sometimes you can see a barely noticeable image with a certain successful hit of external light on the screen.
Replacing the LEDs requires disassembling the LTY550HJ03 panel. We do not recommend such works on their own to TV owners and craftsmen who do not have experience in repairing LCD panels, especially at home.

If there is no image, and the backlight is on, the screen becomes slightly lighter when turned on, and on an open TV, the light is visible through the holes in the panel case.

In this case, the T-CON (Timing Controller) board may be defective, but often the MainBoard 1-883-753-32 is also defective. A software failure is also possible. The panel can also be faulty - damage to strips, loops, for example, after moisture. In such cases, first of all, it is necessary to check the panel supply voltage at the LVDS connector, fuses on the T-CON board or panel brackets, as well as supply and reference voltages for column and line drivers - VGH, VGL, Vcom.
If they are within the normal range, then the oscilloscope must track the passage of LVDS signals from MainBoard 1-883-753-32, as well as synchronization signals to the loops with drivers.
Flooded screens of LED TVs can sometimes be restored if significant damage has not formed in the loops and on the panel trims.


- The indicator blinks or is on constantly, the TV does not turn on, does not respond to the remote control.

Repair or diagnostics of the 1-883-753-93 motherboard should begin with checking the stabilizers and power converters necessary to power the microcircuits and matrix. If necessary, you should update or replace the software (software). In some cases, to repair the MB (SSB) board, it may be necessary to replace the chips - CXD4727GB, K4B2G1646C-HCH9, SIL9287BCNU, GL850G with new or known good ones. In cases where BGA technologies are used, defects are usually localized by heating.

If there is no tuning to channels of terrestrial 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 NoName tuner outputs. It is also necessary to check with an oscilloscope the presence of pulses of data exchange between the tuner and the processor via the I2C bus.

Attention to TV owners! Attempts to repair SONY KDL-55EX720 yourself are not recommended by the manufacturer and can lead to serious negative consequences!


DOWNLOAD SCHEMATIC DIAGRAM  / SERVICE MANUAL   ------------------>  CHASSIS   AZ2F   FOR MODELS :   KDL-32EX720, KDL-32EX721, KDL-32EX723, KDL-32EX724, KDL-32EX725, KDL-32EX726, KDL-32EX727, KDL-32EX728, KDL-32EX729, KDL-37EX720, KDL-37EX723, KDL-37EX725, KDL-40EX720, KDL-40EX721, KDL-40EX723, KDL-40EX724, KDL-40EX725, KDL-40EX726, KDL-40EX727, KDL-40EX728, KDL-40EX729, KDL-46EX720, KDL-46EX721, KDL-46EX723, KDL-46EX724, KDL-46EX725, KDL-46EX726, KDL-46EX727, KDL-46EX728, KDL-46EX729, KDL-55EX720, KDL-55EX721, KDL-55EX723, KDL-55EX725.




Revision after repair of the backlight. BD9276EFV in LED driver 1-883-300-11. Information from the master.

In the driver current sensors on the board 1-883-300-11, from pins 26, 28, 30, 32 of the BD9276EFV microcircuit, two 3.3 Ohm resistors per channel are installed in parallel on the case.

Reducing the backlight current from 125 mA to 95 mA - increased the value of one of the pair of resistors from 3.3 Ohm to 6.8 Ohm for each of the four above pins, leaving the other unchanged.

Driver current limitation. BD9276EFV at 1-883-300-11. 

General recommendations
To reduce the backlight current in LED drivers 1-732-438-11, you should proportionally increase the values ​​of the resistors from pins 26, 28, 30, 32 of the BD9276EFV microcircuit to ground for all four channels in the same way, for example, remove one resistor from the pair, then the current will be halved.
You can increase the value of one of the pair of resistors so as to reduce the current by 20-30 percent.

Additional MainBoard Repair

The appearance of MainBoard 1-883-753-32 is shown in the figure below:

1-883-753-32

1-883-753-32 can be used in TVs:

SONY KDL-32CX520 (Panel V315H3-L01), SONY KDL-32EX421 (Panel LTY320AN02), SONY KDL-32EX720 (Panel LTY320HJ01), SONY KDL-40EX521 (Panel LTY400HM08 001), SONY KDL-46EX720 (Panel LTY460HJ05 3D), SONY KDL-46CX520 (Panel LTY460HN01), SONY KDL-40CX521 (Panel LTY400HM07).


External view of the power supply

APS-299:

APS-299

Main features of the SONY KDL-55EX720 device:

The matrix (LED-panel) LTY550HJ03 is installed.
The LED driver 1-883-300-11 is used to power the backlight LEDs, it is controlled by the PWM controller BD9276EFV.
The formation of the necessary supply voltages for all nodes of the SONY KDL-55EX720 TV is carried out by the APS-299 power module, or its analogs using CXA3811M, CXA3799AM, MIP2H2 microcircuits and N-FET TO-220F power switches.
MainBoard - the main board (motherboard) is a 1-883-753-32 module, using chips CXD4727GB, K4B2G1646C-HCH9, KFM2GN6Q2B, Y164B, NJU72040, Sil9287BCNU, GL850G and others.
The CXD2825GA tuner provides reception of television programs and tuning to channels.


Instructions and updates

Bravia TVs: Firmware download version 4.027:

PKG4.027EUA file, version 4.027 dated 12/11/2014 (70,578,347 bytes).

For models: KDL-65HX920, KDL-65HX923, KDL-65HX925, KDL-60NX720, KDL-60NX723, KDL-60NX725, KDL-55EX720, KDL-55EX721, KDL-55EX723, KDL-55EX725, KDL-55NX720, KDL-55NX723, KDL-55NX725, KDL-55HX820, KDL-55HX823, KDL-55HX825, KDL-55HX920, KDL-55HX923, KDL-55HX925, KDL-46CX520, KDL-46CX525, KDL-46EX520, KDL-46EX521, KDL-46EX524, KDL-46EX525, KDL-46EX720, KDL-46EX721, KDL-46EX723, KDL-46EX724, KDL-46EX725, KDL-46EX726, KDL-46EX727, KDL-46EX728, KDL-46EX729, KDL-46HX720, KDL-46HX723, KDL-46HX725, KDL-46NX720, KDL-46NX723, KDL-46NX725, KDL-46HX820, KDL-46HX823, KDL-46HX825, KDL-46HX920, KDL-46HX923, KDL-46HX925, KDL-40CX520, KDL-40CX521, KDL-40CX523, KDL-40CX525, KDL-40EX520, KDL-40EX521, KDL-40EX523, KDL-40EX524, KDL-40EX525, KDL-40EX720, KDL-40EX721, KDL-40EX723, KDL-40EX724, KDL-40EX725, KDL-40EX726, KDL-40EX727, KDL-40EX728, KDL-40EX729, KDL-40HX720, KDL-40HX723, KDL-40HX725, KDL-40NX720, KDL-40NX723, KDL-40NX725, KDL-37EX521, KDL-37EX524, KDL-37EX525, KDL-37EX720, KDL-37EX723, KDL-37EX725, KDL-32CX520, KDL-32CX521, KDL-32CX523, KDL-32CX525, KDL-32EX421, KDL-32EX425, KDL-32EX520, KDL-32EX521, KDL-32EX523, KDL-32EX524, KDL-32EX525, KDL-32EX720, KDL-32EX721, KDL-32EX723, KDL-32EX724, KDL-32EX725, KDL-32EX726, KDL-32EX727, KDL-32EX728, KDL-32EX729, KDL-26EX320, KDL-26EX321, KDL-26EX325, KDL-24EX320, KDL-24EX325, KDL-22EX320, KDL-22EX325.

The update file and instructions can be downloaded from the manufacturer's website for the KDL-55EX720.

Guides and instructions are also offered for this model:

User manual. Published on 26 Apr 2017, size 6.55 MB.
i-Manual. Published on 13 Apr 2014.



SONY KDL-55EX720 TV with LCD LTY550HJ03, 55 "(140 cm) diagonal, 16: 9 format. This model uses Edge LED side illumination.
There is support for 3D images with active (shutter) separation technology of the right and left channels.
The LTY550HJ03 sensor and MainBoard 1-883-753-32 software provide viewing of broadcasts and movies in high quality HD at a resolution of 1920x1080 pixels in graphics decomposition at 1080p (Full HD).
The KDL-55EX720 TV is equipped with SMART software, built-in applications and the ability to work on the Internet. Internet connection can be made via Wi-Fi wireless connection. The input analog video signal can be processed in PAL, SECAM, NTSC systems. Graphic processing and formation of a digital signal picture occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Video processor supported media file formats: MP3, WMA, MPEG4, Xvid, DivX, MKV, JPEG.
The power of the sound speaker system is 20 W (2x10 W), provided by two speakers. Uses the NICAM stereo signal processing system and the Sound Surround function.
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 x4, USB x2, Ethernet (RJ-45). A headphone output is provided. To connect an analog computer or laptop to this TV model, a VGA (D-Sub 15) connector is used, which supports resolutions: 640x480, 800x600, 1024x768, 1280x1024, 1360x768, 1920x1080. The digital tuner is capable of receiving TV channels in DVB-T, DVB-C standards.

The power consumed when operating from the mains is 113 W. Power supply 1-883-922-12.

Dimensions: with stand 1269x799x315 mm, without stand 1269x769x41 mm.

TV weight: with stand: 25.4 kg, without stand: 20.2 kg.

Attention! The panel LTY550HJ03 of the SONY KDL-55EX720 LED TV  the most precious element of it.

Avoid impacts on the glass and excessive pressure on the screen surface to avoid damage to the LED panel!
It is unsafe for any liquid to spill on the screen. Sometimes one drop of water is enough, if it flows down the glass onto the plumes, the TV may become unrepairable.  (SO YOU HAVE TO SPRAY YOUR JIZZ SOMEWAY OFF YOUR DUMB GARBAGE TV)

REPAIRING / SERVICING TV SONY KD-55AF8

Technical description and composition of the SONY KD-55AF8 TV, panel type and modules used. The composition of the modules.

SONY LED
Model: KD-55AF8

Chassis / Version: MAIN BM2A

Panel: LE550AQP (EL) (A1)

T-CON: 6870C-0755B V18 VER1.0.0

LED driver (backlight): integrated into PSU

Power Supply (PSU): APS-422 1-983-477-13

PWM Power: PFC, PWM, MIP2H2 (STB)

MOSFET Power: N-FET TO-220F

MainBoard: 1-983-249-31

IC MainBoard: CPU, Scaler, eMMC, AUDIO, DC / DC

Tuner: CE553ZP

Control: WiFi: 1-458-998-11 J20H088

Specifications KD-55AF8
SONY KD-55AF8
General recommendations for TV LCD LED repair
Possible manifestations of malfunctions

- SONY KD-55AF8 does not turn on and does not show any signs of operability at all. Does not blink indicators and does not respond to control buttons.

Most often, with similar manifestations, the main power module APS-422 is faulty. Its output voltages should be measured, and in their absence, check the serviceability of the power switches (N-FET TO-220F) of the converters and rectifier diodes for the probability of short circuit.
In case of breakdowns in the secondary circuits of the converter, it can usually work in an emergency mode in a short circuit mode, and with a short circuit in the power elements of the primary circuit, the mains fuse or current sensor in the source of the key is most often cut off.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can disable it in key mode, or provoke an excess of the maximum current or voltage values. These can be circuits supplying a PWM controller, damper or frequency setting circuits, or OOS (negative feedback) elements in the stabilization circuit. PWM controllers (PWM) PFC, PWM, MIP2H2 (STB), in the absence of external damage and a short circuit between the terminals, are checked by replacing them with a known good one.

- There is no picture, but there is sound and reaction to commands from the remote control. Or the image appears immediately after switching on and disappears.

As a rule, in such cases there is no display backlight. The reason can be found in the malfunction of the LEDs, in the violation of the contact connections of the LED strips, or in the provision of their power supply (LED driver).
It should be remembered that it is not possible to determine a break in the LED lines without disassembling the panels using a tester or multimeter without an additional device, for example, a current source. To open all PN junctions connected in series at once, a voltage of several tens of volts may be required. Then you need to open the panel and check each LED separately with a multimeter. If the capabilities of your multimeter do not allow opening the LED in the forward direction or dual LEds are used, then the PN transition of the emergency zener diode can indirectly serve as an indicator of serviceability. In the event of a malfunction of the LED-a, the PN-junction of the Zener diode will either be cut off, or broken through in the SC.

In cases where the SONY KD-55AF8 does not have a picture, but there is sound, the display backlight often does not work.
In LED TVs, the LEDs inside the LE550AQP-ELA1 OLED panel are usually faulty, and less often the LED driver.
Without backlighting, sometimes you can see a barely noticeable image with a certain successful hit of external light on the screen.

Replacing the LEDs requires disassembling the LE550AQP-ELA1 panel. We do not recommend such works on their own to TV owners and craftsmen who do not have experience in repairing LCD panels, especially at home.

If there is no image, and the backlight is on, the screen becomes slightly lighter when turned on, and on an open TV, the light can be seen through the holes in the panel case.
In this case, the T-CON (Timing Controller) board may be defective, but often the MainBoard 1-983-249-21 will also be defective. A software failure is also possible. The panel may also be faulty - damage to strips, loops, for example, after moisture. In such cases, first of all, it is necessary to check the panel supply voltage at the LVDS connector, fuses on the T-CON board or panel brackets, as well as supply and reference voltages for column and line drivers - VGH, VGL, Vcom.
If they are within normal limits, then the oscilloscope needs to track the passage of LVDS signals from MainBoard 1-983-249-21, as well as synchronizing signals to the loops with drivers.

Flooded screens of LED TVs can sometimes be repaired if no significant damage has formed in the loops and on the panel trims.

- The TV does not turn on, the indicator signals the standby or operating mode, or blinks.

Repair or diagnostics of the motherboard 1-983-249-31 should begin with checking the stabilizers and power converters required to power the microcircuits and matrix. If necessary, you should update or replace the software (software). In cases of complex MB (SSB) repairs and with the necessary skills and equipment, it may sometimes be necessary to replace its CPU, Scaler, eMMC, AUDIO, DC / DC chips and other possible faulty components. Malfunctions associated with BGA soldering technologies are usually easily diagnosed by the warm-up method.

If you suspect a malfunction of the CE553ZP tuner, first of all, you need to make sure that the software is correct, as well as the presence of the necessary levels of supply voltages and pulses of data exchange with the processor via the I2C bus at the corresponding tuner pins.

Owners of the KD-55AF8 TV are advised to contact only qualified specialists with the necessary work experience for repair! Attempts to repair yourself without the appropriate knowledge and skills can lead to irreversible negative consequences!

Additional MainBoard Repair

The appearance of MainBoard 1-983-249-31 is shown in the figure below:

1-983-249-31

External view of the power supply

APS-422:

APS-422

Main features of SONY KD-55AF8 device:

Installed matrix (LED panel) LE550AQP (EL) (A1).
Matrix control uses the 6870C-0755B Timing Controller (T-CON).
A converter combined with a power supply is used to power the backlight LEDs.
The formation of the necessary supply voltages for all nodes of the SONY KD-55AF8 TV is carried out by the APS-422 power module, or its analogs using PFC, PWM, MIP2H2 (STB) chips and N-FET TO-220F power switches.
MainBoard - the main board (motherboard) is a 1-983-249-31 module using CPU, Scaler, eMMC, AUDIO, DC / DC and others.
Tuner CE553ZP provides reception of television programs and tuning to channels.


Instructions and updates

Firmware update to version 6.6555:

File sony_dtvota_2016_1606555100_eua_auth.zip, version 6.6555 dated 04/22/2020 (1 886 350 011 bytes).

For models: KD43XG8305, KD49XG8305, KD49XG8377, KD43XG8388, KD49XG8388, KD43XG8396, KD49XG8396, KD43XG8399, KD49XG8399, KD49XG9005, KD55AG8, KD65AG8, KD43XG8096, KD49XG8096, KD55XG8096, KD65XG8096, KD75XG8096, KD43XG8196, KD49XG8196, KD55XG8196, KD65XG8196, KD65AF8, KD55AF8, KD75XF9005, KD65XF9005, KD55XF9005, KD49XF9005, KD65XF8796, KD55XF8796, KD49XF8796, KD43XF8796, KD65XF8599, KD55XF8599, KD49XF8599, KD43XF8599, KD85XF8596, KD75XF8596, KD65XF8596, KD55XF8596, KD49XF8596, KD43XF8596, KD65XF8588, KD55XF8588, KD49XF8588, KD43XF8588, KD65XF8577, KD55XF8577, KD49XF8577, KD43XF8577, KD65XF8505, KD55XF8505, KD49XF8505, KD43XF8505, KD70XF8305, KD60XF8305, KD55XF8096, KD49XF8096, KD43XF8096, KD65XF7596, KD55XF7596, KD49XF7596, KD43XF7596, KDL49WF805, KDL43WF805, KDL49WF804, KDL43WF804, KD77A1, KD65A1, KD55A1, KD75XE9405, KD65XE9305, KD55XE9305, KD75XE9005, KD65XE9005, KD55XE9005, KD49XE9005, KD75XE8596, KD65XE8599, KD65XE8596, KD65XE8588, KD65XE8577, KD65XE8505, KD55XE8599, KD55XE8596, KD55XE8588, KD55XE8577, KD55XE8505, KD55XE8396, KD55XE8096, KD49XE8396, KD49XE8099, KD49XE8096, KD49XE8088, KD49XE8077, KD49XE8005, KD49XE8004, KD43XE8396, KD43XE8099, KD43XE8096, KD43XE8077, KD43XE8005, KD43XE8004, KD100ZD9, KD75ZD9, KD65ZD9, KD49XD8305, KD43XD8305, KD55XD8005, KD49XD8005, KD43XD8005, KD49XD8077, KD43XD8077, KD49XD8088, KD43XD8088, KD49XD8099, KD43XD8099, KD65XD7504, KD65XD7505, KD55XD7004, KD49XD7004, KD55XD7005, KD49XD7005, KD50SD8005.

The update file and instructions can be downloaded from the manufacturer's website for the KD-55AF8 model.

Benefits and improvements of the latest update:

Improved TV turn-on time when exiting standby mode.

Guides and instructions are also offered for this model:

Reference Manual (Web Manual). Published on 13 Feb 2019.
Directory. Published on 21 May 2018, size 1.63 MB.
Wall-Mount Bracket. Published on 26 Apr 2018, size 9.7 MB.
Quick setup guide and quick start guide. Published on 25 Apr 2018, size 574 KB.


SONY KD-55AF8 TV with OLED-display LE550AQP-ELA1, diagonal size 54.6 "(139 cm) 16: 9 format. The screen in this model is made using modern OLED technology.
The LE550AQP-ELA1 sensor and MainBoard 1-983-249-21 software are capable of realizing the highest UHD image quality at 3840x2160 resolution in 4K UHD, HDR. Image processing is performed using modern High Dynamic Range (HDR) technology with an extended range of brightness gradations.
The KD-55AF8 TV has built-in SMART software and pre-installed Android Operating System. Internet connection can be made via Wi-Fi wireless connection. Video processor supported media file formats: MP3, WMA, MPEG4, HEVC (H.265), Xvid, DivX, MKV, JPEG.
The power of the sound acoustic system 50 W (2x10 + 2x10 + 1x10 W) is provided by 5 speakers. Uses the NICAM stereo signal processing system and the Sound Surround function.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, HDMI x4, USB x3, Ethernet (RJ-45), Bluetooth, Wi-Fi 802.11ac, Miracast. A headphone output is provided. The digital tuner is capable of receiving television channels in the DVB-T, DVB-T2, DVB-C, DVB-S, DVB-S2 standards.

The power consumed in the operating mode from the network is 392 W. APS-422 power supply.

Dimensions: with stand 1226x717x255 mm, without stand 1226x712x55 mm.

TV weight: with stand: 22.2 kg, without stand: 18.7 kg.

Attention! LCD-panel LE550AQP-ELA1 OLED TV SONY KD-55AF8 is the most expensive element of it.
As far as possible, avoid mechanical impact and liquid spillage on the screen glass to avoid irreversible damage to the OLED panel! 

REPAIRING / SERVICING TV SONY KD-49XG7096

 
Technical description and composition of the SONY KD-49XG7096 TV, panel type and modules used. The composition of the modules.

SONY LED
Model: KD-49XG7096

Panel: YS9S049HNG01

LED backlight: LB49024 V0_00 4-725-887

T-CON: 6870C-0814A 43 6871L-5988B V19

LED driver (backlight): 1-981-457-16 173638816

PWM LED driver: BD9423EFV

MOSFET LED driver: KUS220N10 TO-252

Power Supply (PSU): Adapter 19.5V AC / DC ACDP-160D02

MainBoard: 1-983-119-22 (173703222)

IC MainBoard: CPU, eMMC, AUDIO, DC / DC

Tuner: CE251ZP

Specifications KD-49XG7096
SONY KD-49XG7096
General recommendations for TV LCD LED repair
Possible manifestations of defects

- SONY TV KD-49XG7096 does not turn on at all. No response to the remote control and front panel control buttons. Indicator lamps do not light up or flash.

In some of these cases, the problem is found in the adapter power supply module.
An external power supply adapter 19.5V AC / DC ACDP-160D02 type can be purchased by the owner of the TV on his own and its repair is not always expedient. In any case, the simplest typical defects characteristic of most SMPS circuits can be easily detected and eliminated after opening. Its output voltages should be measured and, in their absence, the serviceability of the power switches and rectifier diodes in the converters should be checked for possible breakdown.
In case of any breakdowns in the secondary circuits, the converter can operate in an emergency mode of a short circuit, and in the event of a short circuit in the power elements of the primary circuit, the mains fuse or the current sensor in the source of the key is often cut off.
The breakdown of power switches (MosFet) in switching sources is sometimes caused by malfunctions of other circuit elements, for example, in the circuits supplying the PWM controller, frequency setting or damper, as well as in the circuits of Negative Feedback (OOS) stabilization. PWM controllers (PWM), if they do not have visible damage to the case and an outright short circuit between the terminals, are usually checked by replacing.

- There is no image, there is sound, it reacts to the remote control, the channels are switched. In some cases, the image appears when turned on and disappears immediately.

As a rule, in this case, the backlight of the LED panel is faulty. The reason may be found in a malfunction of the LEDs, in a violation of the contact connections of the LED strips LB49024 V0_00 4-725-887, or in providing their power supply (LED driver).
When diagnosing, it must be borne in mind that it is impossible to check for an open in the circuit of the LED lines without disassembling the panels using a tester or multimeter. To open all PN junctions connected in series, a voltage of the order of several tens of volts is required, and ideally a current source. Opening the panel, you can check each LED separately. Typically, Chinese multimeters will lightly light one 3-volt LED when the probes are connected to it in the forward direction. For dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of the LED health. In the event of a malfunction of the LED, its zener diode will either be cut off, or broken through in the K / Z.

In cases where SONY KD-65XD8599 does not have a picture, but there is sound, the display backlight often does not work.
In LED TVs, the LEDs inside the V650QWME01 panel are usually faulty, and less often the LED driver.
Without backlighting, sometimes you can see a barely noticeable image with a certain successful hit of external light on the screen.

Replacing the LEDs requires disassembling the V650QWME01 panel. We do not recommend such works on their own to TV owners and craftsmen who do not have experience in repairing LCD panels, especially at home. (Yes those home grown geniuses  are the worst)

If there is no image, and the backlight is on, the screen becomes slightly lighter when turned on, and on an open TV, the light is visible through the holes in the panel case.
In this case, the T-CON (Timing Controller) board may be faulty, but often the MainBoard 1-980-832-11 is also faulty. A software failure is also possible. The panel can also be faulty - damage to strips, loops, for example, after moisture. In such cases, first of all, it is necessary to check the panel supply voltage at the LVDS connector, fuses on the T-CON board or panel brackets, as well as supply and reference voltages for column and line drivers - VGH, VGL, Vcom.
If they are within normal limits, then the oscilloscope needs to track the passage of LVDS signals from MainBoard 1-980-832-11, as well as synchronizing signals to the loops with drivers.

Flooded screens of LED TVs can sometimes be restored if significant damage has not formed in the loops and on the panel trims.

- The indicator on the front panel blinks, the TV does not turn on in operating mode, does not respond to the remote control.

Repair or diagnostics of the motherboard 1-983-119-22 should begin with checking the stabilizers and power converters necessary to power the microcircuits and matrix. If necessary, you should update or replace the software (software). When repairing an MB board, it is necessary to check its components CPU, eMMC, AUDIO, DC / DC. Defective elements must be replaced. If chips with BGA soldering technology are used, the problem in its implementation is detected by local heating of the chip.

If there is no tuning for terrestrial or cable TV channels, you should make sure that the software is correct, as well as that the supply voltages on the terminals of the CE251ZP tuner match. It is also necessary to check with an oscilloscope the presence of pulses of data exchange between the tuner and the processor via the I2C bus.

Attention to TV owners! Attempts to repair SONY KD-49XG7096 on your own are not recommended by the manufacturer and can lead to serious negative consequences!

Additional MainBoard Repair

The appearance of MainBoard 1-983-119-22 is shown in the figure below:

1-983-119-22

Main features of SONY KD-49XG7096 device:

Installed matrix (LED-panel) YS9S049HNG01.
Matrix control uses the 6870C-0814A Timing Controller (T-CON).
The LED driver 1-981-457-16 is used to power the backlight LEDs, it is controlled by the PWM controller BD9423EFV. KUS220N10 TO-252 keys are used as power elements of the LED driver.
An external adapter 19.5V AC / DC ACDP-160D02 is used to power all internal components of the SONY KD-49XG7096 TV.
MainBoard - the main board (motherboard) is a 1-983-119-22 module, using CPU, eMMC, AUDIO, DC / DC and others.
Tuner CE251ZP provides reception of television programs and tuning to channels.


Instructions and updates

Firmware update to version 5.435:

File sony_tvupdate_2015_5435_eub_auth.zip, version 5.435 dated 06/26/2019 (1 644 778 348 bytes).

For models: KD-75XD9405, KD-65XD9305, KD-55XD9305, KD-85XD8505, KD-75XD8505, KD-65XD8505, KD-65XD8577, KD-65XD8599, KD-55XD8505, KD-55XD8577, KD-55XD8588, KD-55XD8599, KD-65SD8505, KD-55SD8505, KD-75X9405C, KD-65X9305C, KD-55X9305C, KD-75X9105C, KD-65X9005C, KD-55X9005C, KD-75X8501C, KD-75X8505C, KD-65X8501C, KD-65X8505C, KD-65X8507C, KD-65X8508C, KD-65X8509C, KD-55X8501C, KD-55X8505C, KD-55X8507C, KD-55X8508C, KD-55X8509C, KD-49X8301C, KD-49X8305C, KD-49X8307C, KD-49X8308C, KD-49X8309C, KD-43X8301C, KD-43X8305C, KD-43X8307C, KD-43X8308C, KD-43X8309C, KD-55X8005C, KD-49X8005C, KD-65S8505C, KD-55S8505C, KD-65S8005C, KD-55S8005C.

The update file and instructions can be downloaded from the manufacturer's website for the kd-49xg7096 model.

Benefits and improvements of the latest update:

Latest Android security updates.

Guides and instructions are also offered for this model:

Reference Manual (Web Manual). Published on 22 Jul 2019.
Reference Manual (Web Manual). Published on 22 Feb 2017.
Directory. Published on 17 Feb 2017, size 6.9 MB.
Quick setup guide and quick start guide. Published on 19 May 2016, size 3.07 MB.
Wall-Mount Bracket. Published on 26 Apr 2016, size 40.62 MB.


SONY TV KD-65XD8599 with LCD V650QWME01, 65 "(165 cm) diagonal, 16: 9 format. This model uses Edge LED side illumination.
The V650QWME01 sensor and MainBoard 1-980-832-11 software are capable of realizing images in the highest UHD quality at a resolution of 3840x2160 pixels in 4K UHD, HDR. Image processing is performed using modern High Dynamic Range (HDR) technology with an extended range of brightness gradations.
KD-65XD8599 TV has built-in SMART software and pre-installed Android TV operating system. Internet connection can be made via Wi-Fi wireless connection. The input analog video signal can be processed in PAL, SECAM, NTSC systems. Graphic processing and formation of a digital signal picture occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p, 2160p. Video processor supported media file formats: MP3, WMA, MPEG4, MKV, JPEG.
Sound speaker power 20 W (2x10 W) is provided by two speakers. Uses the NICAM stereo signal processing system and the Sound Surround function.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, component, HDMI x4, USB x3, Ethernet (RJ-45), Bluetooth, Wi-Fi 802.11n, Miracast. A headphone output is provided. To connect an analog computer or laptop to this TV model, a VGA (D-Sub 15) connector is used, which supports resolutions: 640x480, 800x600, 1024x768, 1280x1024, 1360x768, 1920x1080, 3840x2160. The digital tuner is capable of receiving television channels in the DVB-T, DVB-T2, DVB-C, DVB-S, DVB-S2 standards.

The power consumed when operating from the network is 214 W. APS-404 power supply.

Dimensions: with stand 1454x894x279 mm, without stand 1454x842x44 mm.

TV weight: with stand: 23.9 kg, without stand: 20.3 kg.

Attention! The panel V650QWME01 of the SONY KD-65XD8599 LED TV is the most expensive element.
Avoid impacts on the glass and excessive pressure on the screen surface to avoid damage to the LED panel!

It is unsafe for any liquid to spill on the screen. Sometimes one drop of water is enough, if it flows down the glass onto the plumes, the TV may become unrepairable.

REPAIRING / SERVICING TV SONY KD-49XG7005

Technical description and composition of the SONY KD-49XG7005 TV, panel type and modules used. The composition of the modules.

SONY LED
Model: KD-49XG7005

Chassis / Version: BB9

Panel: YS9S049HNG01

LED backlight: LB49028, LB49029

T-CON: 6870C-0814A 6871L-5988BJ

LED driver (backlight): 1-981-457-16 A2216767C (173638816)

PWM LED driver: BD9423EFV

MOSFET LED driver: 20N10

Power Supply (PSU): Adapter 19.5V

MainBoard: 1-983-119-22 A5000251A (173703222)

IC MainBoard: CPU, eMMC, AUDIO, DC / DC

Tuner: CE251ZP

Control: IR: 1-981-960-12, WiFi: DNUR-SY3 1-458-959-13

Specifications KD-49XG7005
SONY KD-49XG7005
General recommendations for TV LCD LED repair
Possible malfunctions

- SONY KD-49XG7005 TV does not turn on. There are no signs of operability. The indicators on the front panel do not light or blink, the TV does not respond to control buttons.

With similar manifestations, in some cases, the adapter power supply module is faulty.
The owner of the TV can purchase an external power supply Adapter 19.5V on his own, and its repair is not always advisable, but sometimes it makes sense to open it and eliminate simple defects typical of the SMPS. In the absence of the necessary supply voltages in the secondary circuits of the converters, it is necessary to check the power switches and rectifier diodes for possible partial or complete breakdown.
In case of breakdowns in the secondary circuits of the converter, it can usually work in an emergency mode in a short circuit mode, and with a short circuit in the power elements of the primary circuit, the mains fuse or current sensor in the source of the key is most often cut off.
Breakdown of Mos-Fet keys used in switching power supplies is often caused by malfunctions of other elements, for example, in the power supply circuit of a PWM controller, in frequency setting or damper circuits, as well as in negative feedback stabilization. PWM microcircuits (PWM) are usually checked by replacing them with new ones, or knowingly working.

- There is no image, the screen is black, there is sound, when the screen is illuminated outside, you can sometimes see barely noticeable outlines of the image.

In such cases, the most likely malfunction of the LED panel backlighting elements. The reason may be in the breakage of the backlight LEDs, in the stabilization of their power supply, or in the violation of the contact connections of the LB49028, LB49029 strings connectors.
To check the LED strips for breakage without disassembling the panel, for example, a current source will help. It is impossible to open series-connected PN junctions with a simple multimeter; a voltage of the order of several tens of volts is required.

- The indicator blinks or is on constantly, the TV does not turn on, does not respond to the remote control.

Repair or diagnostics of the motherboard 1-983-119-22 should begin with checking the stabilizers and power converters required to power the microcircuits and matrix. If necessary, you should update or replace the software (software).

If you suspect that the tuner CE251ZP. Is faulty, first of all, you need to make sure that the software is correct, as well as the presence of the necessary levels of supply voltages and pulses of data exchange with the processor via the I2C bus on the corresponding terminals of the tuner.

Once again, I remind TV users: do not try to repair yourself without the appropriate knowledge, experience and the necessary qualifications! Trust the repairs to professionals with sufficient experience in the field of electronic repair.

Additional MainBoard Repair

The appearance of MainBoard 1-983-119-22 is shown in the figure below:

1-983-119-22

Main features of SONY KD-49XG7005 device:

Installed matrix (LED-panel) YS9S049HNG01.
Matrix control uses the 6870C-0814A Timing Controller (T-CON).
The LED driver 1-981-457-16 is used to power the backlight LEDs, it is controlled by the PWM controller BD9423EFV. The keys of the 20N10 type are used as power elements of the LED driver.
An external adapter 19.5V type is used to power all internal components of the SONY KD-49XG7005 TV.
MainBoard - the main board (motherboard) is a 1-983-119-22 module, using CPU, eMMC, AUDIO, DC / DC chips and others.
Tuner CE251ZP provides reception of television programs and tuning to channels. 

Instructions and updates

Firmware update to v8.882:

File sony_tvupdate_2017_8882_eff_auth.zip, version 8.882 dated 06/22/2020 (296 861 100 bytes).

For models: KD65X7053, KD65X7052, KD55X7053, KD55X7052, KD49X7053, KD49X7052, KD43X7053, KD43X7052, KD65X7055, KD65X7056, KD55X7055, KD55X7056, KD49X7055, KD49X7056, KD43X7055, KD43X7056, KD65XG7005, KD55XG7005, KD49XG7003, KD49XG7005, KD43XG7005, KD43XG7077, KD43XG7096, KD43XG7004, KD43XG7073, KD43XG7093, KD49XG7077, KD49XG7096, KD49XG7004, KD49XG7073, KD49XG7093, KD55XG7073, KD55XG7077, KD55XG7096, KD55XG7004, KD55XG7093, KD65XG7073, KD65XG7077, KD65XG7096, KD65XG7004, KD65XG7093, KD43XG7003, KD43XG7002, KD49XG7002, KD55XG7003, KD55XG7002, KD65XG7003, KD65XG7002, KD49XF7003, KD43XF7003, KD65XF7005, KD55XF7005, KD49XF7005, KD43XF7005, KD55XF7000, KD49XF7000, KD43XF7000, KD55XF7073, KD49XF7073, KD43XF7073, KD55XF7077, KD49XF7077, KD43XF7077, KD65XF7093, KD55XF7093, KD49XF7093, KD43XF7093, KD65XF7096, KD55XF7096, KD49XF7096, KD43XF7096, KD49XF7002, KD43XF7002, KD65XF7004, KD55XF7004, KD49XF7004, KD43XF7004, KD65XF7003, KD55XF7003, KD65XF7002, KD55XF7002.

The update file and instructions can be downloaded from the manufacturer's website for the KD-49XG7005 model.

Benefits and improvements:

Fixed an issue where subtitles of some TV service providers were displayed incorrectly;
Improved overall TV stability.

Guides and instructions are also offered for this model:

Reference Manual (Web Manual). Published on 29 Nov 2019.
Directory. Published on 09 Mar 2020, size 858 KB.
Other. Published on 28 Nov 2019, size 276 KB.
Quick setup guide and quick start guide. Published on 16 Aug 2019, size 705 KB.


SONY TV KD-49XG7005 with YS8S490HNG01 LCD, 48.5 "(123 cm) 16: 9 aspect ratio. This model uses Edge LED side illumination.
The YS8S490HNG01 sensor and MainBoard 1-983-119-11 software are capable of realizing the highest UHD image quality at 3840x2160 resolution in 4K UHD, HDR. Image processing is performed using modern High Dynamic Range (HDR) technology with an extended range of brightness gradations.
KD-49XG7005 TV has built-in SMART software and pre-installed Linux Operating System. Internet connection can be made via Wi-Fi wireless connection. Video processor supported media file formats: MP3, WMA, HEVC (H.265), Xvid, MKV, JPEG.
The power of the sound speaker system is 20 W (2x10 W), provided by two speakers. Uses the NICAM stereo signal processing system and the Sound Surround function.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, HDMI x3, USB x3, Ethernet (RJ-45), Wi-Fi 802.11n. A headphone output is provided. The digital tuner is capable of receiving television channels in the DVB-T, DVB-T2, DVB-C, DVB-S, DVB-S2 standards.

The power consumed when operating from the mains is 115 W. External power supply Adapter AC / DC 19.5V.

Dimensions: with stand 1101x704x260 mm, without stand 1101x645x57 mm.

TV weight: with stand: 12.5 kg, without stand: 11.9 kg.

Attention! The YS8S490HNG01 panel of SONY KD-49XG7005 LED TV is the most expensive item.
Avoid impacts on the glass and excessive pressure on the screen surface to avoid damage to the LED panel!
It is unsafe for any liquid to spill on the screen. Sometimes one drop of water is enough, if it flows down the glass onto the plumes, the TV may become unrepairable.