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Tv shuts off by itself - Sony KDF-E55A20 55 in. LCD Television

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I had a similar problem with my Phillips 42 in. LCD HD TV.

Here's the problem. The Power Supply Board. I opened my TV up(warranty was up of course) and found several bad capacitors. Phillips and several other companies were sold capacitors that although were highly rated failed within 5 years because of a lack of preservatives. All sorts of electronic equipment is now being effected due to these defective capacitors.
Solutions?
1. Take it in and have it fixed
2. Open it up, check the board for faulty capacitors(bulged or leaking) Buy a new Power supply board and install it.
3. Remove PSB, remove faulty capacitors and replace with compatible new ones.

Hope this helps

Posted on Dec 09, 2010

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1 Answer

The TV started turning itself off occasionally a


Most likley what it could be is an interferance in the TV. Modern TV's have a feature that will shut itself off when it is not receving a picture. For instance, after so many minutes of "snow" it will shut off.sometimes this can make the TV think there is no signal at shut itself off.Anyway, I suspect its an interferance issue. Perhaps moving the TV further from the source of the interferance might help.

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1 Answer

Tv shuts itself down


This is due to bad caps read here what a cap is www.badcaps.net see you tv is getting hot as normal but the caps cannot stand it any more thus shutting the tv down. The bad caps would be more or less in the power supply unit of this TV. So you can buy a new psu or get it repaired by a expert.

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TV shuts itself off after a couple minutes of being on.


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Tv shuts itself off


The power supply may be going on to protection mode. This is usualy because one of the scan amplifiers may have failed, or something is taking too much current and forcing the power supply to shut down.

Jerry G.

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Assistant


is this electricity pocket plugged up to a timer ? or take the tv back to the shop... lost the receit just look for the same tv on computer

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check your sleep timer settings thats the most comman prob

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1 Answer

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I know that shortly after I purchased this tv mine also shut itself off occasionally. The owners manual says that if it is on dvd mode and it's paused or on an inactive menu or something for 15 minutes or so that it would shut itself off. If a dvd is stuck inside it may be causing this? I have no idea about the open/close malfunction.

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1 Answer

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capacitor problems in power supply or a regulater isolate the power suppley by disconecting the line output stage/unplug scan coils for example and run a 60w bulb as a dummy load one wire to earth and the other to rail voltage colecter of line output transister if the bulb glows steady the power supplys fine

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