I've got a Panasonic TC-P58S2, manufactured Oct 2010, purchased on Black Friday 2010. It's been working fine until yesterday when it turned off abruptly (while watching it) with a 'pop' (but no typical burnt electronics smell) and then was completely dead (it had been on an hour or so). It has no flashing lights, does not respond to the power button, etc., just dead. I searched the internet and came upon this forum and all of its great resources, and through it found the schematic diagrams and trouble-shooting guides, but haven't found anyone reporting the same problem. In my attempt to troubleshoot it, I could not find any obvious blown components, no dark/discolored areas, etc, but I did find the F501 fuse blown, which is on the 'hot' side of the power supply board, but it's not one of the primary fuses on the Mains. So quick and dirty attempt to make more progress, I jumped around that blown fuse (2A/250V) with what I had handy, a 5A/250V. My thinking was if it was some kind of direct short, it would take out the new fuse too. Well, in retrospect, not a smart move as when I plugged it back in I had about 5 seconds of "progress" (some click of relays was heard) then a white square box lit up and everything went dead again. The white box was 'RF601' a "THERMAL CUTOFF WITH RESISTOR," apparently another flavor of fuse downstream from the F501 fuse (which didn't blow this time -- the current draw was apparently something less than my 5A temp fuse). So now I have at least 2 problems on the 'P' board: the original F501 fuse, and now this blown RF601 thermal device.
So my question to all the great experts here, is it likely the original problem is somewhere on the P board, and if I just buy a replacement P board I'll be good to go? (And I don't mind doing that as it's only $80 and looks easy to replace.) Or is it just as likely the real root cause is some other board drawing too much current from the P board causing the original fuse (and now the thermal device) to go? What I'd like to avoid of course is buy a new P board and have it blow the same fuse as soon as I install it.
Anyone hear/seen this problem before and advice on how to proceed?