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Re: TV will not stay on for longer than 5 minutes
This sounds like the shutdown circuit is shutting down the TV due to an over current condition. This overcurrent condition is caused by a component in the HV section drawing excessive current.
the 5 blinks is a visual indication of the problem.
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Be sure its blinking 5 times, count after it cycles the first time through the red lights. If it is fact 5 times, that is a lamp driver error.More likely it cycled 4 times, which is common on this model, if that's the case, then it's the fan. Most likely the large one in the rear...It's an easy fix, just pull the back off and replace the part.
i also have the same problem with the flashing green light for a while then a different red light starts blinking on and off around 5 times....and i replaced my burnt bulb with a new one...still no picture.
my screen will turn on right after unit is plugged in and stay on for a short period of time, then it shuts off and the red light near the power button blinks and teh tv will not turn back on.
there might be problem of loose contact in power supply