Question about Mitsubishi XD221U 3D Projector
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: White spots on screen Need DMD
This is something of an urban myth....The "DMD chip" is actually the LCD display IC for the set; yes I have seen some listed on EBAY---still a myth----they are replaced (when a light engine is rebuilt in a space age lab or environment) under exacting conditions----if positioned a micron off in any direction picture will be tilted in some way---this is also not like changing spark plugs in a car, if you have a optical engine issue like spots etc, either get a rebuilt engine from Mitsubishi or buy a new set.
They usually require some parts for old engine (mounting brackets etc) be installed on new or rebuilt engine.
I did see the "chip" for another model listed on ebay today.(100.00 PLUS)
I understand the engine is expensive, I replaced a lot of them when the sets were in warranty---more Mitsubishi than any other brand with Samsung a distant second.
I am sure Mitsubishi does not offer the part for sale--they want to sell a tested rebuilt engine only.
I wish you luck but have little hope you will find a "part" other than the whole engine.
Posted on May 14, 2011
You are not the first person I have seen who replaced the display chip and had fubar after--1,2 is no error found.
You might want to do a little more research: Mitsubishi when changing the optical engine has a procedure so the engine can communicate with the digital circuit in the set--opps!
By the way the reset on the front is only a boot up for the set--set also has a hidden option menu for a hard reset of the entire set to factory defaults.
tried that one?
Posted on Mar 31, 2012
Replace the optical engine---the chip if you can find it is over 200 and not something real easy to replace.
Posted on Apr 23, 2012
When you take off the back cover you are pretty much looking at the chip. Right in front of you in the middle of the light engine is a little fan.
Remove the fan and you will see a big metal heat sink / shield. remove the sheild and you will see a circuit board. in the middle of the board is the dmd chip.
Posted on Aug 23, 2012
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