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I was just given a Mitsubishi VS-4571 tv from my buddy, and it turns off after about 15 minutes of running, then will not turn back on for a long time (overnight) after that. Any suggestions?

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  • Michael sWEET Oct 02, 2009

    What can I do to check for those/ fix those. For reference I am a civil engineer with limited electrical experiencs but am very able regarding learning and troubleshooting.

  • Michael sWEET Oct 03, 2009

    I need a solution in less technical terms

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Replacing the lamp will fix this problem. Projection tv's lamps have a life of about 8000 hours and depending on how much it was used (not neccesarily how old the tv is), the lamp will need to be replaced. Generally there is a built in timer that will warn you before it goes out but I heard that they didn't start putting these on until they built the earlier models.

Unfortunately, I learned this the hard way and sold two good projection screen tv's when this happened because I assumed they were goners. I have one now that tells me when the lamp needs to be replaced and I just bought it a year ago...already needs a new lamp.

You can find the user manual online that will tell you what part number is needed. Once you get this info, head over to eBay and get a new one for half price. Mine ran me $189.99 but on eBay, I found a new OEM for $69.00.

They are pretty simple to replace and the manual will give you instructions on how to do so.

Hope this helps!

Posted on Oct 03, 2009

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One of 2 problems #1) the H.O.T. is overheating and avalanching till it cools/#2)the hi-voltage circuit has gone over voltage specs and the bleeder resistor isnt bringing it back into voltage spec

Posted on Oct 02, 2009

  • daniel  hendrickson
    daniel hendrickson Oct 02, 2009

    the deflection board will be marked on apron and the board, you will see some heat sinks with transistors and your flyback will also be on the board with a heavy red or black insulated single wire going to the screen,it should be about 3" high X 2" around and have two copper lines that split the transformer and it will say transformer/flyback on the board

  • daniel  hendrickson
    daniel hendrickson Oct 02, 2009

    also its just easier and less time consuming to replace the whole deflection board with a re-built one under warranty

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