There is a lense behind the main focus lense that's causing this. Flakes of the colored tint are coming off causing white light to shine through. If you look at your projection, you can see black spots as well, these being the flakes that have re-located themselves. I dug into mine deep enough to diagnose this, to actually replace the little lense would be a little tricky. The unit has to be mostly disassembled. Also I haven't been able to locate a vendor who sells the part. Optoma wants you to send it in so they can do the repair, and won't part w/ these component level parts.
I also have this problem which is getting worse and worse. Optoma wants me to send the unit in for svc. with a $110 deposit. I am tryinig to find out what the cost might be to replace the probably faulty DLP chip. Good luck!
Hi,
I noticed you have a DLP projector. I have a Optoma EzPro 756 which is also a DLP projector.
I notice white "blobs" on the screen when there is a black screen. It is caused by dust getting into the optical block not the lense. If you are comfortable with opening up the projector, you could gently blow out the optical area with compressed air, GENTLY so you don't dislodge any components, and see if that helps. I seems to be a common problem with DLP projectors a few years old. If there are sharp focused dots on the screen then most likely, it could be some pixels starting to go bad like dead pixels on a computer screen. That problem is pretty much irreversible.
Hope this helps,
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Many thanks
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