I have a Mitshubishi xd280u DLP projector which have white dots problem, i got a DLP/DMD chip of Mitshubishi ex-320. Can i replace this (ex320 dmd chip) to the xd-280u prejector???

Anything is usually fixable. What you have to determine with Dell's assistance is if it is cost effective to do so.

TV Parts Universal TV Stands DLP Chips ShopJimmy Go to this web site to get the parts you need.

Bad DMD chip, needs replacement.

This is a dlp projector and has a bad DMD chip. Most models are very similar. Here is a video of a similar repair.

bad dmd chip $200 http://www.youtube.com/watch?v=775YOs-aOPc&feature=share&list=UU_Iacxxa-E63l6FhQjkcH8A

after making a cleaing, if you still found the white dots, i think it is problem with DMD chips. you have to buy a replacement,
if your machine is ViewSonic PJD6221, congratulations, this model machine is used 1076-6038B DMD chips, at present, it is the cheapest DMD chips.

It is because of the DMD chisp faulty, you have to buy a DMD chips replaced. fortunately, this model DMD chips is 8060-6038B, it is not expensive, and normal, for any fuIt is because of the DMD chisp faulty, you have to buy a DMD chips replaced.
fortunately, this model DMD chips is 8060-6038B, it is not expensive, and normal,
for any further help, please contact merther help, please contact me

if these are pixel shaped dots then the DMD chip is most likely faulty

make a cleaing, if it still is full white dots, it should be problem of DMD chips,

buy a 8060-6038B DMD chips and instal it. only cost USD184

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