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Anonymous Posted on Oct 19, 2014

73 Mitsubishi tv model 73640 serial 122364. Has a

73 Mitsubishi tv model 73640 serial 122364. Has a blank screen. Took awhile for tha volume come on. But now we don't have no picture. Tha screen been dark for a little bit.

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T.l. Moore

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  • Posted on Oct 20, 2014
T.l. Moore
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Do you have the rest of the model number like ws wd in front of the number . and have you checked the bulb i suspect you have a DLP Tv Set and you may have a lamp failure

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Chi Chu

  • 8457 Answers
  • Posted on Sep 04, 2011

SOURCE: just paid to replace the

Mitsubishi that the one,who u should contact.Talk to them make some kind of deal with them to help u to do a repairing or replace the tv Light Engine Projection Block.That the tv problems,this problems a design flaw on the tv Light Projection Egine Block the IC they put in that causes of this white spots are showing up will continue showing up more and more white dots.It will not stops.

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1answer

My mitsubishi WD73640 keeps randomly losing it's source signal, the tv will go black,then hdmi window will appear then all will restore

Check the HDMI cable make sure it is fully seated or better yet get another one. You can get them on eBay for a few $'s
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I have a WD-73642 tv has no picture but has sound

I had this problem with a laptop of mine it's the led just replace the screen
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I HAVE MITSUBISHI WD-73640 AND ITS SHOW THE GEEN LIGHT BUT DOESN'T HAVE PICTURE OR SOUND

The first thing to replace is the lamp. Google your model number and "lamp" and you'll find several sites that sell them. It isn't difficult to replace yourself and isn't very expensive. Good luck.
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Black screen

Sounds like you need to replace the lamp. An original Mitsubishi lamp will last 7 to 10000 hours. It's a no brainer to replace. Buy the lamp from Mitsubishi or a dealer. Do not buy one over the internet. Those are awful...
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I can hear tv but have black screen and red light on front

Check its back-light inverter board. If needy replace it. If you wish to get some details, check the site linked here. http://electronicshelponline.blogspot.com/Pull up older posts. Now there is no back-light to your TV.
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White lines that are constantly on will go away for a few seconds then pop back up.. Mitsubishi 73" model number WD-73640

You need to replace the 4719-001997 DLP Chip. this should solve the issue.
This chip can be expensive so look around before you purchase. This is a common problem with these TVs, both white lines and white dots. You can find out how to replace the chip by going to this website: http://www.fixyourdlp.com/2012/09/04/solve-the-mitsubishi-wd-73640-white-dot-problem-with-a-new-4719-001997-dlp-chip/.Hope this helps
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