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Dell Projector 4210 - dots on the pictures

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Post time: 2012-11-3 18:20:20 |Show all posts
Bought this projector 2 years ago and since few months ago it starts showing some white and black dots on the output. Started with few dots and now there are hundreds of them. It looks like dusts. Tried to clean the lamp and outside part of the lens but doesn't change anything. Tried blowing the whole unit with a blower but none of them came off. Not sure if it is a fungus in the inner part of the lens. I can't figure out how to open apart the projector.Has anyone experience this before ?
---Dell 4210X DLP---Dell 4210X DLP Projector

Post time: 2012-11-3 21:38:54 |Show all posts
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,

Post time: 2012-11-3 19:44:53 |Show all posts
It is the mirror chip, nothing else.  Some people have luck with gentle vacuuming of the chip but that is a very early fix if it goes very long it just needs to be replaced.  It can be relatively easily replaced.  It is accessed by removing the top cover and lens and dismounting the chip and ribbon.  While it is out of the projector, do a through cleaning of the projector and protect it from dust before returning it to its mount.  Unfortunately this is not a model with a dust free light path, but that is a feature to look for on your next projector
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