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Refer to Sony KDL 55EX500 Troubleshooting Manual Protection Mode Symptom... 5X Blink - TCON & HFR Failure The 5X blink protection mode indicates a communications error between the TCON/HFR board and the MT5388 microprocessor on the A-Board.
First replace the TCON/HFR Board if the 5X protection mode blink pattern occurs. If the TCON/HFR Board does not repair the problem then replace the A-Board.
thats a switching regulator its almost impossible to get full schematics for an LG LCD tv since the manufacturers dont provide them as the repairs are board replacement and no longer component based repairs. Are you needing assistance with a power supply on a LG42LC2D ? If not post what model number you have an what issue and I will assist.
Power supply board part number for Sony KDF-E50A10 is as follows:
A1113732A .... GT BOARD COMPLETE
and if you are asking for ballast power supply board part number, it is as under:
146893611 ... POWER SUPPLY BLOCK
Hope these info will help you. Thanks.
Here is required details... G board is Power Supply and Horizontal / Vertical Out board and part number is ... " A-1316-471-A " G BOARD, COMPLETE Its available in Tri-State Module Inc and price is approx $200
The problem you have is with the G1 board. The 17 volts is not supplied. Do you have a multimeter and know how to trouble shott following a service manual schematic? if not call a pro to assist you as this could be the G1 board, but to be sure, you will need to troubleshoot and check some voltages and follow circuit flow using a schematic diagram. If you do know how to read, analize and follow schematics schematics contact me at [email protected] If you do not, take the set to an authorized Sony repair center. Good Luck