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panasonjc th-50px70b fault

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techno:
hi
My panasonic th-50px70b tv when on for several hours will switch from hdmi channel to dtv by itself and the remote controller becomes unresponsive.Could someone point out which board could cause this problem.
thanks

michael first:
hi,if this tv employs a keyboard unplug it and run the set for a check.

techno:
Thanks for your reply,had already done self check and everything checked ok, the fault only seems to occur when the set has been on for about 5 or 6 hours

downunder:

Hi Techno,

Faulty keyboards are unheard of in Panasonics. All your dysfunctions are associated with the DG Board, not generally a repair item. Exiting the self-check mode will activate a factory reset automatically. Could try running a small fan directed at the DG Board and see if the TV runs for a longer period, to try and narrow it down.

Bruce

techno:
Thanks Bruce,will give that a try and hope i can find a DG Board,a quick search found nothing

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