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.