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Mitsubishi WD-73727 Light Engine Replacement

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Old 01-16-2010, 11:29 AM   #1
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Default Mitsubishi WD-73727 Light Engine Replacement

I recently obtained a rarely used 2006 Mitsubishi WD-73727 Rear DLP (73” DLP 1080i). It worked great for 6 months but now in the morning, mostly, when I turn it on, only the right half of the screen comes up. The left half is either blank or black or scrambled. I then turn it off, unplug it from power, wait 20 seconds then plug it back in, wait until the green LED stops flashing, then I turn it back on and it works fine for the rest of the day and night. I put a new lamp in it three months ago.

I talked to my neighborhood Mits repair guy and he said it’s probably the light engine, but he’s not seen it fail intermittently like this before. I asked what it would cost to replace it and he said around $500.

I am an Electronic Tech by formal training, now working in the Computer Solutions delivery industry, so I know I can fix or repair this on my own. (swap out parts), But I need a little help. First I need to find maintenance manuals or any kind of schematics or repair manuals for this beast, and I also need to find a parts distributor. When I go out to the Mitsubishi-tv/support, I get no help. They only have replacement remotes and emitters and stuff like that.

Is there any one on this board that has ventured off the reservation this far and done this kind of activity?

Thanks,
Jimmy

Last edited by jimmy2iron; 01-16-2010 at 11:31 AM. Reason: grammer
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Old 01-16-2010, 02:09 PM   #2
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I typed in your model number and then manuals on google and got lots of hits. I'll bet the same with model no. followed by light engine.
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Old 01-17-2010, 10:16 AM   #3
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Default I tried that no light engine hits

All I got when searching the model number, were bad reviews and lamp replacements. No light engine hits. There are a lot of people upset with Mitsubishi regarding their DLP Rear TVs. Apparently, when you replace the lamp, as I did, other components fail within a few months, like the light engine or ballist or other very expensive components. I remember the person I bought this TV from said they had already replaced the light engine. So what I thought was a great deal, was not. My bad.
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Old 01-17-2010, 04:49 PM   #4
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Service manual: http://cgi.ebay.com/MITSUBISHI-WD-62...item4cec82f3ef
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Old 01-25-2010, 10:17 AM   #5
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Default WD-73727 light engine replacement

I bought my TV new in December 2005, and purchased an extended warranty with it, but of course the light engine failed a few weeks ago, just after the extended warranty expired.

I called a local repair service (found on mitsu's website) and they quoted me $727 to replace the light engine. $450 for the part and the rest is labor and tax. I was going to buy the light engine online myself, but I could not find the part anywhere (part # 938PO19010).

I think I'm just going to bite the bullet and pay the $727, because I am not tech-savvy and do not want to mess with fixing it myself.

Not sure if this helps at all, aside from giving you the part number for the light engine, but at least you know someone else is feeling your pain. Good luck!
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Old 02-08-2010, 11:00 AM   #6
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So....what ended up happening with your tv? I have the exact same model number with the exact same problem. Any insight would be great. Thanks

Brent
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Old 02-09-2010, 11:15 AM   #7
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With the cascade of failures in Mitsubishi DLP TV's I would suggest that your money would be much better spent on a new flat panel display from a reputable manufacturer...
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Old 11-18-2012, 05:45 PM   #8
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The HIGHDEF salesman told me to repair the light engine ($700.00) and buy two tubes @ $100.00 each. REALLY STUPID QUESTION: Do I need a technician? Why not 'drop & insert' the light engine then call someone out to 'calibrate the TV'?!!! How hard is it to remove & replace the light engine? Do you have to do any sodering?
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