Technical description and composition of the SONY KD-55X8507C TV, panel type and applicable modules. The composition of the modules.SONY LED
Model: KD-55X8507C
Chassis / Version: BMFL MainBoard
Panel: SYV5541 YongLighting
LED backlight: 75, P3C08G001 15206N
T-CON: 15YS2FU13TSTLTG2_V0.0
LED driver (backlight): integrated into PSU
PWM LED driver: BD9488F
Power Supply (PSU): 1-894-794-11 APS-385 GL3
PWM Power: BD7677FJ (PFC), MIP2H2 (Standby), CXA3810M (PWM resonant), LV5980MC
MainBoard: 1-894-596-21
Tuner: CE641ZP H5F107B
Technical Specifications KD-55X8507C
SONY KD-55X8507C
General repair guidelines for TV LCD LED
Possible malfunctions
- The SONY KD-55X8507C TV does not turn on and does not show any signs of turning on, it does not respond to the control buttons or to the remote control.
Often in such cases, the power module 1-894-794-11 is faulty. It is necessary to measure its secondary output voltages, and if they are absent, check the power switches and rectifier diodes in the converters for a short circuit.
In case of breakdowns of semiconductors in the secondary circuits of any converter, as a rule, it can operate in emergency short-circuit mode without output voltages, and during short circuit in the elements of the primary circuit, the main fuse and, less often, the current sensor at the source of the key are 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 put it out of operation in key mode or create an excess of the maximum permissible parameters of the switch. These can be elements supplying the PWM controller, frequency-setting or damping circuits, or negative feedback elements in the stabilization circuit. PWM controllers BD7677FJ (PFC), MIP2H2 (Standby), CXA3810M (PWM resonant), LV5980MC, in the absence of visible damage or frank short-circuit between the terminals, are checked by replacing with new ones, or obviously working.
- There is no image, there is sound, it responds to the remote control, the channels are switched. In some cases, the image appears when you turn on and immediately disappears.
In some of these cases, the malfunction is caused by a lack of backlighting on the display. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
To detect a break in the LED lines without disassembling the panel, a current source is required. It is impossible to open transitions connected in series with a simple multimeter; voltage of several tens of volts is necessary.
- The indicator blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the motherboard 1-894-596-21 should begin by checking the stabilizers and power converters needed to power the microcircuits and matrix. If necessary, update or replace the software (software).
Before replacing the CE641ZP H5F107B tuner, if there is no tuning for the channels, you must first check the software and the supply voltage at its terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus
TV users and owners need to remember that attempts to self-repair a SONY KD-55X8507C TV without the appropriate qualifications and the necessary experience can lead to serious negative consequences!
Service Manual 212 pages of 2015 on the model --------------------> KD-55X8501C, (FW-55X8570C), KD-55X8505C, KD-55X8507C, KD-55X8508C, KD-55X8509C, KD-65X8501C, (FW-65X8570C), KD-65X8505C, KD-65X8507C, KD-65X8508C, KD-65X8509C, KD-75X8501C, (FW-75X8570C), KD-75X8505C
The appearance of MainBoard 1-894-596-21 is shown in the figure below:
1-894-596-21
The appearance of the power supply
Main features of the device SONY KD-55X8507C:
Installed matrix (LED-panel) SYV5541 YongLighting.
The matrix control uses the Timing Controller (T-CON) 15YS2FU13TSTLTG2_V0.0.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by the BD9488F PWM controller.
The necessary supply voltages for all nodes of the SONY KD-55X8507C TV are generated by the power module 1-894-794-11, or its analogs using BD7677FJ (PFC), MIP2H2 (Standby), CXA3810M (PWM resonant), LV5980MC microcircuits.
MainBoard - the main board (motherboard) is a module 1-894-596-21.
The CE641ZP H5F107B tuner provides TV reception and channel tuning.