Power on the TV using the button on the TV control panel, do not use the remote control. The next most common fail I believe is the ceramic resistor.Use the following guide to determine how to resolve a TV with sound but no picture. The thermal fuse is a cheap item I can buy from Ja圜ar its knowing where to attach the bypass leads on the circuit board. A thermal fuse which is hidden in the transformer that can be replaced by bypassing the original (without removing the original) & mounting it externally on the top side of the transformer). It was built July 2010, I understand there is 3 main fail points on the P board. I was wondering if old Turkey may have a manual or diagrams for this one. I tried the basics unplug replug it in press the power button for 10 secs, remove the back & remove all trace of dust with compressed air, unplug & replug all removable plugs on circuit boards, (strangely I didn't see any fans) & then I re-tested it no joy, so the problem has to be deeper. But a new 40 inch Samsung Smart TV for $300 less than I paid for the Panasonic sure sounded good. And as the BB salesperson placing it on craigslist to sale for parts or even placing it on the curb for trash. I guess you have to be patient and try a combination of simple things to remedy the problem before you start removing the back of the TV and replacing boards, fuses, circuits (especially if you have no experience). I have since moved it about 6 more inches away from it. The only other thing I can think of is it was originally within close proximity (not on top) of a floor heat register. Because now it's in the original spot and working fine. The only thing that I can think was the problem was the long period of time that it was disconnected and the fact that after I did the reset, I unplugged it again and re - plugged it regardless to where it was plugged it worked. I then took the TV back to its original spot and reconnected all of the components to it and it worked fine. I re-hooked the Sony Google TV player to it and it still worked. To possibly narrow down the problem, because it was too heavy to carry back and forth, I hooked it up to an extension cord and plugged it back into the same circuit that it was initially plugged into and it was still working. Once in the other room I plugged it in and Boom! It worked. So I gave up and unhooked all the components (Comcast Cable Box, Sony Google TV player and a Samsung Blu Ray player, all connected via HDMI) and carried it to an unused room in my home and made room for another TV. I did the "depress the power button" again, still nothing. When I got back home after being away about 3 hours, I plugged it back in with no true expectation that it would work. After about an hour in Best Buy, I decided not to buy anything new and there is no way my 4 year old Panasonic was broken and needed a repair shop. Once there after seeing the super low prices of better technology 42 inch tv's I thought maybe it was time to purchase something new anyway. I unplugged it one last time and I got up and went to Best Buy to possibly buy a new tv. I did the whole "depress the power button for 10 seconds" "unplugged it for long periods of time" and "plug it into a different circuit" Boom! Still the same problem. I went into freak out mode when my 4 year old, rarely used 42 inch Panasonic plasma did the same thing.
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