Hello all I have read the forums here for quite a while and finally decided to join. My question is with a little bit of info. I have a Mitsubishi XD300U projector I got when the company I work for purchased new projectors and this particular unit had a failed light tunnel. I purchased 2 units from ebay for about $50.00 each to use as parts and I happened to get a 2 fully intact light tunnels. I put one in my Projector and got that one working perfectly. I also restored a 2nd one from the 2 ebay projectors and got that one working perfectly as well with one exception. The 2 projectors I got for parts from ebay did not come with the Lamp cover which activates the switch that allows the unit to turn on. My question is where can I purchase just the lamp cover. I already tried contacting Mitsubishi's parts department and was informed that the part is no longer being made and cannot be ordered through them. I keep watching the auction site to see if I can get the same projector in a non working condition with the lamp cover but no luck so far it seems that the lamp covers just magically disappear when they appear on auction sites >_<. I was wondering if someone either had one for sale or knew where else I could try to get one.

Have you found the fix? I'm having the exact same issue with mine. Thinking of replacing the lamp.

Thanks for reply Harley. Might a new cable box provided by my cable provider cause this? How about a new cordless phone in the home. These are changes I made in the past several weeks. I will do some experimenting in the next several days. Cyklopps