How hard is it to replace the dmd assemble for a mitsubishi wdc657 dlp hdtv

https://www.youtube.com/watch?v=C9fiv4bI1qI
Replacing a DLP TV Chip - White Dots Issue - How to Fix...

1. Remove DMD Board Housing Screws. [02:34]
2. Remove DLP Chip Heatsink Screws. [03:31]
3. Remove DMD Board Screw. [03:58]
4. Reinstall DLP Chip Heatsink. [05:14]
5. Reinstall DMD Board Housing. [05:37]

https://www.youtube.com/watch?v=JgiZdc4kZDw

Howdy Mike-d. here,
I do not know what a DMD is on a Mitsubishi 73'' TV.
I did do a little web searching and here is a couple of things I came across.

From this website: http://www.tvserviceparts.com/Mitsubishi_DMDChips.html WD73833 ALL 4719-001997 DMD Chip, DLP, 1920X1080/XHD5, 0.65"/ DC4, TYPE X NON
I have no ties to these websites.
"I researched this and it was a DMD chip that needed to be replaced."
from this website: http://www.consumeraffairs.com/home_electronics/mitsubishi.html

Hope that helps.

Mike-d. out
[email protected]

Mitsubishi TVs and Electronics Mitsubishi TV DMD DLP Chip

The DLP chip is failing. There is no way to fix this except to replace the DMD (digital mirror device) chip. Contact Mitsubishi for repair centers.

Home IPS LaserExpress

Replace the DLP chip at cost between $160-$300 for the part and about two hours of your own time to do it.
http://www.shopjimmy.com/samsung-mitsubishi-toshiba-4719-001997-dlp-chip.htm/

That is a replacement part that you should contact the manufacturer for.

Obtain a copy of the service manual and in it you will find the replacement part number of the DMD and how to purchase one. It is a very, application-specific component that you are likely to never find in any private seller listings.
A lot of DMD and optics engines were made and patented by Texas Instruments for many TV's.

Here is a link to get you started. http://www.dlp.com/hdtv/dlp-mitsubishi-hdtv/default.aspx

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.

That means you need to replace the Optical Unit Block/Light Engine.Dmd board has been known to cause this also, but most of the companys replace Dmd and optical unit.
PTS rebuilts Light Engines 1-800-844-7871
Encompass Parts Distribution List this Model /Parts 1-800-638-3328

This unit uses a DLP (digital light processor) chip and if this starts to fail then you will get spots appearing on the screen. The DLP chip will need to be replaced.

To replace the DMD Chip for Mitsubishi DLP Tv is easy. Here is the DMD Chip replacing tutorial step by step.

If you get White or black dots all over the screen (DMD symptom)
If you get a pixilated picture (DMD Board)