Re: Panasonic TC-P55GT30 7 Blinking Lights... SC Board OK

Hi all,

Just wanted to drop-in to let everyone know that after putting in the replacement SU board (and re-seating the SD/SU-board ribbons like half a dozen times), my TV has resurrected and looks as good as ever!

Thanks so much for everyone's help and thank you bad-caps, there's no way I would have been able to get it fixed without all the resources I found on this community.

Re: Panasonic TC-P55GT30 7 Blinking Lights... SC Board OK



Just called them and they will be sending me a return label so we can swap boards.

I'll keep you guys posted. Thanks for your help thus far....

Re: Panasonic TC-P55GT30 7 Blinking Lights... SC Board OK



No, I tested the cap on-board. I guess I see your point, though -- my original board is a 5340AK and the refurbed board I purchased is a 5340, so most likely different revisions.

EDIT:
I just confirmed the above -- saw a picture of the 5340 revision of the board online and it does not have a cap at C640.

Second EDIT:
After checking the new SU board's ribbon connectors, it looks like one of them does in fact have a short (as does one of the connectors on my original SU board)....

Re: Panasonic TC-P55GT30 7 Blinking Lights... SC Board OK



Hi Syaoran,

So sure enough C640 is shorted on my original SU board, and the Cap is completely missing on the replacement board I ordered!

I guess I'll look to see if there's any of the same cap on my original board that I can solder off and put on my "new" board?...

Re: Panasonic TC-P55GT30 7 Blinking Lights... SC Board OK

Bump

Hi everyone,

I've read over most just about all of the 7-blinking light posts on here and they have been very helpful. Long story short, I isolated the SC-board to be problematic so I replaced that. Now when I perform the SU/SD-board isolation test by jumping the SC50 connector, the TV does not shut off and I see the Green light on the SC-board. It does make a kind of buzzing noise, but it looks to be OK.

With this in mind, I ordered replacement SU and SD boards. After connecting them, I still got the 7 blinking lights. I tried every combo of their SU/SD boards and mine...

Re: New Members - please post your introductions here

Hello everyone. Looking for help with a Panasonic Viera plasma that I don't want to replace.