Question about Sylvania 6842THG 42 in. Plasma HDTV
I'VE GOT A SYLVANIA 42 INCH PLASMA TV THAT SHUTS DOWN AFTER ABOUT A HALF HOUR AFTER YOU TURN IT ON , IF YOU PUT IT BACK ON RIGHT AWAY IT WILL TURN BACK OFF RIGHT AWAY. IF I WAIT ABOUT 20 MINUTES ,IT WILL RUN FOR ABOUT ANOTHER 30 MINUTES. TIA PHIL
Thanks for using FixYa. Hope you know that a plasma TV is a very hard working device. It is working harder than any TV that has been built before, and as a result it produces a lot of heat. 75% of technical problems in plasma TV's are caused by overheating problems which seems to be the case with your unit. To start with unplug the unit and take the back off then check the power supply board for any bulged/swollen components. If you leave it unplugged for 20minutes the capacitors cools down and then the unit starts working after sometime, which states that its most likely either one or more capacitors on the power supply unit that are bad and should be replaced. All this is only recommended if you have electrical expertise and/or know how to solder/re-solder components as these units contain high voltages even when switched off. Please do accept the solution if the issue is resolved or post a comment for further assistance.
Posted on Jul 12, 2010
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Posted on Jan 02, 2017
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