I have a growing number of white dots on the bottom of my screen when I use my Dell projector. The projector is only 6 months old and they have only appeared recently.

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

Dell projectors are known for using extremely cheap display chips... Most probably the pixels are stuck you will have to send it to dell for service

1,white spots appeared on screen,means the DMD chip is broken,you need a new DMD chip.
we supply the new DMD chip,it's life is 6 years, and the price is USD200

Have a nice day!
We supply original projector parts: lamp, bulb, Lcd panel, Lens, DMD chip, color wheel,
motherboard, powersupply ... with high quality and competitive price.
Jerry
Lampdeng Limited

1,white spots appeared on screen,means the DMD chip is broken,you need a new DMD chip.I supply the DMD chip and the price is USD200
any questions, feel free to contact me
We supply original projector lamp,bulb,accessories,Lcd panel,Lens,DMD chip,color wheel,motherboard,powersupply,ballast... with high quality and competitive price.
have a nice day!
Jerry,Lampdeng Limited

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

I have 2 NP-200 projectors installed in a school which show white dots on a black background and black dots on a white background. This is caused by the DMD chip losing pixels. Only solution is to replace the chip, I'm researching now if that i an economical solution.

perhaps it is the reason of DMD chips,
if the DMD chips had been bad, it will show some white or dark dots on the screen, it looks like that this machine need 1076-6038B DMD, but I can't make sure. so need you to find a repair man help you to reconfirm it.
this DMD is not expensive, so please don't be worry aobut it,

Your DMD chip or DMD driver need to be checked. The most likely it is DMD. If your projector is new with one year warranty, send it to the company for repairs. They will replace it at no cost.

sonsunny

dirty lens, dirty mirrors, warped light guides, spider webs and mini-UFOs that fly across the inside can cause what you described.

but 6 months is pretty early for a cleaning but possible.

Hi there

That is a definate Mainboard replacement.

Must warn you that it could turn out to be a expensive exercise