We have an optoma HD6800,working great for about two years.It has recently been starting up O.K, but the picture goes after about two minutes, and the fan is not as audible as it used to be. Is it as simple as buying a new lamp, or do we need to replace the fan?

Usually, that means that there is an issue with the cable connecting the computer to the projector. Check to make sure none of the pins are bent or broken. Aslo see if a differnt cable works correctly.

Sound like the original color wheel for Optoma HD80 is bad.

If the unit has been moved when hot.

If not, try un-plugging the unit for a few minutes and re-connect.

Hope this helps

It sounds like you bulb is ready to die. First clue is picture quality. That happen to me and a new bulb remedy the problem. Bulbs are expensive though.

Does the lamp go off, or does the "shutter" block the light out.

Despite the relatively few hours on the lamp, the fact is it's over 5 years old. It is not uncommon for a lamp to age and be too weak to fire. Replace the lamp, you should be fine.

This is how my problem with the power not going on started. I cleaned mine and it was running much better. I decided to give it a good cleaning, but now the power won't turn on. Try at your own risk as this could happen to you as well. Just a note, I have had mine for 4 yrs with the same bulb, just over 6000 hrs. I was lucky until now.

i had, have the same problem i also replaced the bulb then shortly after the power went out no standby light or anything. From what i've read so far it seems like a power supply issue so i ordered two power supplys from optoma 1 for lamp 1 for the unit waiting on delivery from CA they were $ 99 each if this work i'll be one happy camper. Three years no problems it's a great machine with incredible picture using 106" screen

I simply shut the projector down (had to pull the power cable) and when starting up again it was working fine and has since then.

Mine did the same thing. The bulb is used up...replace the bulb. That fixed mine, working great again.

Okay, I recently had a loud noise coming from my projector and found online meterial stating that the colour wheel had been damaged. So with a bit of guts I managed to open the projector and found the colour wheel missing a segment.

I removed the colour wheel and the broken piece of the segement and tried to contact Optoma. Optoma turned round and said they cannot sell me the the colour wheel, which got me very upset. Some people claim online that Optoma will sell you the part on a back order at £50. (if you can be a little specific on how you managed to convince them to sell you the part, would be great).

The only option I had available was to send my project to them and they would repair for an estimated cost of £125+VAT. Guess what, you can buy the entire projector off ebay for 150quid!!!

Anyways after fiddling around quite a big online I got fedup and decided to glue the broken segment together and it SOLVED the loud vibration problem. I have colour and picture.

Becareful not to tighten the colour wheel screw too tight orelse it will break another piece of segement (Like I did).

Here are instructions on how to open up the projector.

http://www.geekfest.info/DV10/dv10.html

I cannot guarantee this will work for you as it depends on how badly you have shattered the colour wheel segment, so do at your own risk. I had two piece of the segment broken and a third by tightening the colour wheel screw too tight.

This will work for awhile but the colour wheel does need replaceing one day. If anyone can tell me how you can get Optoma to sell you the colour wheel would be great.

Best of Luck