Question about Mitsubishi WS-65807 65" Rear Projection Television

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Won't power on...

We turned off our TV last night and went to turn it on this AM and the green power light will flash for a few seconds and then automatically power off. It was stated in previous answers to check the PC board (which I have no idea what that is) or to contact a repairman. First, this TV was left by the landlord who didn't want it so I doubt he will want to pay for any repairs and I can't afford to repair it either. Any other troubleshooting I could do on my own to figure out what the problem is or how to fix it myself? Thanks! Jenny

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  • MBP1025 Sep 28, 2008

    EXACT SAME THING IS HAPPENING TO MY TV. I BOUGHT IT 2002. WISH I KNEW WHAT THE PROBLEM IS.

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Unplug the TV for a minute then plug it in while observing the power light. If the light flashes three times then the standby power supply is OK.

If the standby power supply is OK, a diagnostic code can be read from the green power light by counting the flashes. Press the power button once (this sets the diagnostic code). Press and hold the INPUT and MENU buttons on the fron panel for 5 seconds then release. The green light flash a two digit code (x flashes, followed by a pause, then y flashes). If it flashes a 2-2 code then a short circuit has been detected in the switched power supply. It would normally flash a 1-2 code for "no problem detected".

If a 2-2 code is read, check for blown pico fuses on the POWER circuit board. If the FA904 or FA905 fuses are blown then most likely at least one of the two convergence driver ICs are bad. It seems like this is the most common failure. I replaced these fuses and ICs in my TV. The parts cost me $50, but it required extensive disassembly, PC board desoldering & resoldering, and reassembly. If you can resolder circuits on a PC board then you can probably fix it yourself, otherwise call a repair person.

Posted on Oct 06, 2008

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