Question about Mitsubishi WD73727 73" HDTV

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The lamp has just been replaced and now the tv will only stay on for 30 minutes and then turn itself off. The lamp indicator light is red. We can turn the tv back on and the light goes off. Six months ago the optical engine and the lamp were replaced. That lamp only lasted six months and the picture went dark.

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Did you press the System Reset button with a ball point pin on the front of the set? You might have a ballast going bad if it has never been replaced. But first, the reset button then you may have a thermal switch which is located just above the lamp housing. I test the thermal switches by unhooking (while set is unplugged) one of the wires and then putting an alligator clip jumper between the two wires to see if it last longer than the 30 minutes you mentioned. Lastly, there must not be any dust in and around the fan which can cause overheating. Sounds like you have an overheating problem initially. The thermal switch cuts the set off if there is overheating. And also if the switch is faulty it will cut off the set. Also look in the menu for a temperature setting if this model has a setting such as this.

Posted on May 24, 2011

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Posted on Jan 02, 2017

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