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ON & OFF

I TURN LCD TV ON AND IN ABOUT 45 SECONDS IT SHUTS OFF. I CAN CHANG CHANNELS OR ADJUST, BUT IT STILL SHUTS OFF. PLEAS HELP

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  • Anonymous Dec 28, 2008

    there is no red light, and still just shuts off after I turn it on.

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  • 21 Answers

What does the red led on the front do? sounds like a firmware issue or pcb board problem

Posted on Dec 28, 2008

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TV turns on for a few seconds and displays "NO SIGNAL" then shuts itself off. Can't change channels or adjust volume or accept any other command.


You are not the only one I can tell you that. 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

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My tv turns on color works, sound works, then about 45 seconds after it is on, it dims out and shuts off


Hello
Your TV has an internal voltage regulation trouble. Set switches on, finds some voltage troube, normally overvoltage and shuts down. Your TV has an internal voltage regulator. Check if its secondary voltage is more than 110VDC on load. It can be vary from 105V to 115VDC. If it higher than 115v or so, your TVs system control Ic will sense it and shuts the whole supply voltages to down. It is a protection done by the manufacturer. You just check it. In most televisions there will be a preset onboard control to adjust it. For that you need the proper measuring equipments and some skill and more patience.

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It's likely that the TV will require service since your troubleshooting steps didn't resolve the problem. If your TV is smaller than 30", you may carry it in to the retailer of purchase for repairs. Otherwise, service for your TV can be obtained by calling 1-888-237-8289 in the U.S. or 1-866-237-8289 in Canada.

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Resolder the 2 inverter transformer's legs.

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