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It will be due to the missing cover, as the lamp module gets very hot. You could possibly make one, I wouldn't like to guarentee the safety of it though. Usually the cover has a pin or something that engages a safety switch. Maybe the manufacturer Optoma can supply a new cover, the cost would ensure safety from a fire.
The best that you can look out for is to look for GROUNDING problems, loose connectors or faulty cables.
Start by checking out all cables . connectors and see if the power supply ground is well fitted to the chassis. The video or the PC connectors also must be well grounded to the main board , Look for some crack or dry solderr joints in these connectors that could bring these picture noise lines.
Howeverr if you are not able to see or get across these simple problems, i would liike to advice you to try for a exchange which will save you a great deal. Be careful not to damage the WARRANTY SEALS as the dealer may not be helpful.
I hope my advice helps you to decide. Good day
if the fans don't even come on, the power supply is bad. if the fans do but nothing else, the colorwheel is bad. either way, unfortunately, you can't get parts for these anymore (unless you find one on ebay).
For the time being at least, I got my projector back on by unplugging the power cord for about 30 seconds then held down the following keys on the projector: Menu, Enter and the Down Arrow and while holding them down, pressed the power key. The projector started up like new with H0000 hrs on the screen like it was a new one. Will be interesting to see how long the bulb lasts! I had been getting a Replace Bulb messge for several weeks before it shut off with two red lights lit. So I tried the above procedure befoer buying a new bulb.