Hi all. I have a TH-42PC77U that I bought at Costco in October 2007. Unfortunately, while I have all other original paperwork, the receipt is mysteriously nowhere to be found.
After Hurricane Irene rolled through back on August 28, I got the 7-blink error code when the electricity came back on. I messed around with it for a while (basically just unplugging it and plugging it back in at various intervals, since I didn't know what else to do) and eventually it just started working again. Then it was fine until this morning, when I got the 7-blink error code again. Once again, I tried unplugging and plugging it back in a few times at various intervals, and finally after leaving it unplugged for about 20 minutes, it is now working again, for now...but who knows for how it will last this time.
So my question is, given that I do not have the receipt from Costco, the fact that it is an intermittent problem, and working right now, what steps would you guys suggest I take? Should I call Panasonic anyway, or is there nothing they can do while the TV is in working order? Or am I SOL without the receipt? Also, while no electronics specialist, I am a mechanical engineer, fairly technically capable, and comfortable messing around inside the TV if it comes to it. So I was also wondering there some simple/cheap part(s) and instructions I could acquire now and keep on hand for next time?