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Re: 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.
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Hi, If tv shuts off and turns back On itself than lamp is weak and need to be replaced. If tv shuts off but does not turns On itself than you will see red light blinking on tv front, let me know how many times it blinks, there would be pause of 3 seconds in blinks so count pause to pause and post here to provide you helpful info about problem. Thanks.
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.
One must be very careful of the quality of the replacement lamp. Many of the cheap 'deals' on the web for replacement lamps are substandard. I always recommend that replacement bulbs be the original manufacturers bulb.
I have this same TV and had a similar problem. This may or may not be the same case with yours. The button panel on the front of your TV may be having connection problems. Mine would come on and off by itself. I took the front panel off and cleaned the connection on the button board with a q-tip and a little dab of alcohol. This cleared up the problem of it turning itself on and off.