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My tv dont start blinkin 12 times - Panasonic TH-50PX75U Plasma HDTV

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12 Blinks is an audio error. More than likely you have a bad A Board. If you have some electronics experience you can troubleshoot the issue fairly easy.

Take the back off of the set
Unplug connectors A5, A6 and A7 on the power supply and plug in the set.
Check to see if set turns on with a white screen.
If it does, unplug the set and reconnect A5, A6 and A7 and then plug the set back in.
If the set will turn on and stay on, you probably had a shorted speaker wire or
If the set shuts down and starts blinking 12 times again, then you have a defective A board that will need to be replaced.

Posted on Apr 11, 2011

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