Re: Diagnosis help for 7 blinks on Panasonic TC-P46G10

I see - thanks for your time and advice. Replacement SC board seems rare and expensive. Lacking the time to go through it component by component. A shame!

Re: Diagnosis help for 7 blinks on Panasonic TC-P46G10

Thanks.

I might just give up on this. If the SC board is disconnected, isolated from the rest of the TV, then the A board would never receive a high voltage fault signal from the SC. Which is why I don't see how it could return the 7 blink error code unless something is wrong in the fault detection system on the A board.

Re: Diagnosis help for 7 blinks on Panasonic TC-P46G10

Unfortunately I only have a multimeter here. There does to seem to be a very transient high signal (<1s) for when switched on which resolves to 0V in steady-state.

You mentioned earlier that the A board expects to receive an "OK" signal from the SC board, is there a test point from this? Or is constant 0V from the TP_SOS7 the "OK" it is looking for?

Re: Diagnosis help for 7 blinks on Panasonic TC-P46G10

Thanks Tom. The manual I pointed out seems to imply otherwise that isolation should result in a blank screen/no blinks. If the A board requires an "OK" signal then I would think TP_SOS7 (or its OK counterpart) would need to be a high signal.

Tested TP_SOS7, it returns 0V.

Any further thoughts?

Re: Diagnosis help for 7 blinks on Panasonic TC-P46G10

Thanks a lot for the response.

Yeah, the manual is not clear. The way I understand (from reading around) the way the troubleshooting method for Panasonic is if you isolate the problem (de-energize it) the screen should turn on as blank, with no LED codes.

The fact that the SS and SC board are completely isolated but the TV still returns a 7 blink code seems that the module responsible for reporting the fault is to blame, which I believe is the A board - that's how I've arrived at this conclusion. Does...

Hello all,

My first thread so I hope I cover the problem well enough.

It's a Panasonic TC-P46G10 which has the 7 blink problem.

I suspect it is the A-board but I hope to get some opinions on this diagnosis. Troubleshooting steps are as follows.

I have read a few threads on here and performed the SU/SD isolation test by disconnecting everything between SC and SU/SD and shorting SC50. The blink code changes to 6 blinks.

I have then followed instructions from the Panasonic 12th gen plasma tech guide for SC board isolation,...

Re: New Members - please post your introductions here

Hello from New York City (and sometimes Pittsburgh)