Remote control stopped working (except power) and front panel buttons (except power). Ordered firmware update from Panasonic to fix the problem and TV won't respond when SD card is inserted. Unplugged TV to reset and still no luck.
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Hi, 10 times red light blinking shows problem with PA board and/or H board, both boards are available in shopjimmy.com for $35 and $45 Replace required board to solve this issue. Hope this info will help you. Thanks.
Forced to factory default:press and hold [VOLUME ( - )] on the TV and press [MENU] on the remote 2 seconds. Exit: Unplug Power to reset. If it does not help, the main board need to replace. For further questions, please add your comment.
It's definitely a firmware problem. I called Panasonic and they were very polite about the entire situation and sent me a SD card with the firmware update. If you don't have time and you're tired of listening to tv at the same volume there is a way to do a hard reset.
I figured that unplugging the unit would do this, but there is one other step that you have to do to ensure that this works.
Generally the power button on the tv is always in the "on" position, this is what allows the remote to work. In order to do a hard reset the on/off button must be in the off position. Make sure that is off, then unplug the unit, let it sit there for a minute or two and plug it back in. If the tv comes back on as soon as you plug it back into the wall/powerstrip then the button was not in the off position.
This isn't the best fix, you'll still need to get the firmware update but it will at least give you the ability to use your tv normally....well until it decides to randomly lock up on you again and you have to do this all over.