I have a Samsung hlr4266wx/xaa 42'' DLP HDTV and I was watchingtvoneday
and poof it just shut off and wouldnt come back on. Whatisthefirst
things I need to check? No power lights or nothing....
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The lamp ballast or Color wheel might be the problem. We have experienced both issues with the tv shutting down. Also check the hours on your lamp as it might be getting old.
Chances are that the sensor has gone bad. If you know how to get to the circuit board that it is on, then changing the board would be easier than just changing the sensor.
Look for the computer processor inside the TV. It needs to be cleaned. A can of compressed air will work. The processor is overheating and causing the tv to shut off. Look for the small fan that is supposed to keep the processor cool then remove the dust.
Problem may be lamp is failing or ballast which operates lamp may be Bad. Could also be Temperature fault from Inoperable fan or Color wheel. Bulb of course is first choice of possible problem followed by color wheel then ballast. Color wheels usually will start making bearing noise when they start to fail. Hope this helps.
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