20 Most Recent Mitsubishi WD-73833 73" HDTV Questions & Answers

The part to fix that is about 300 dollars.

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

Usually lamp getting bad.

Lessing of brightness on a DLP set is a sign of imminent bulb failure. A new bulb is in order.

I have the same issue with my 73". Rather then going over all of my connections and equipment I'll just say htat I feel your frustration. I have been on the phone with Mitsubishi directly and it appears as though they have a free software upgrade that should address this problem. If you call 1-800-332-2119 and press 4 in the menu you will get someone to help you. Be patient. They will make you go through all of the fixes that you have already tried. They will mail you a flash drive that goes right into the front USB port of your TV. I hope this is of help. Good luck.

ret4good

need to replace the dlp chip under 200.00

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.

It is the Optical lamp board

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.

These tvs are known to have sensor issues. EX: door lamp sensor failure. Thermal fuse failure (above bulb)....Check all sensors on the tv and replace with new and you will be up and running again.


Lastly, always double check all connections and check the bulb ballast as well.


Thank you and best of luck!