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PT-47WX49E My Panasonic TV turned itself off this morning and now it will only come on for about 2 seconds. When it first went out the led turned yellow then shut off. Could you offer any advice to this problem? Thanks, Toddo

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Several things could be causing the problem and without some trace testing it would be hard to determine exactly where the fault is... Could be convergence amps Ic7001 and Ic7002 are very common failures in this unit along with one or more 2.2 ohm resistors in the return R70xx check them all to be sure.
Could be vertical circuit - or esr C524 in the feed for the vertical.
Could check R867, R858 & R860 near the regulator circuit. But my first guess in all this would be the convergence amps.
BTW - this is a P7 chassis and uses two STK392-110 Sanyo amps. If bad replace them with STK392-150's or 180's for greater reliability.. And don't buy the chineese knock-offs.
Bill

Posted on Apr 03, 2008

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