Projector goes off anywhere between 5 minutes to 1 hour .Some times goes off with orange light blinking and sometimes goes off with red light blinking. when it works for more than 30 minutes all lights go out and it can not be switched on again until after 30 minutes to 1 hour. When in operation all fans are operating properly. have tried changing projector lamp with no result. Please help!

SOURCE: Projector lamp flashes and the temp red led lights.

Purchased our76C in Jan, 2007. It is our second unit now that has had the same symptoms. When the unit starts up, the Power light is steady green as normal for a few minutes, but no image is projected. After a few minutes the lights do as you described. Both times Epson support authorized a new unit to be shipped out immediately. They said they had no known issues about it and didn't indicate what was causing the problem. Apparently it is not just the lamp wither. Also, the lamps both had under 20 hours on them.

SOURCE: acer pd 112 projector

Please reset lamp hours to zero and clean its air filter located to its bacside (Bottom)

SOURCE: Epson EMP-74 - Blinking Red Light

Hi Sootycat

Ok , most of the time this would be the Fan.Powerboard that is faulty then and unfortunatelly it would be better to replace the part rather than having it repaired.

Repaired Powerboards normally give the same problem a couple of months down the line.

SOURCE: Projector shuts off after about 45 minutes

Just a long shot, but...

I have an epson 9000i that did the same thing. Turns out that unit has a small fan (I think 60mm) right next to the power supply to keep it cool, in addition to the large fan that exhausts past the lamp. The fan runs non-stop as long as the unit is powered-up for two reasons I can think of - keep the power supply a little cooler, and the lamp a little warmer so there's not such a temp difference when it powers-up. Long story short, that fan had died. I replaced it with an aftermarket 60mm fan and it's been working fine ever since. Hope this helps.

Bob

SOURCE: Dell 2300MP Projector Lamp - "Orange Light"

Have you put the lamp cover back on? as I did the same and it would not power the lamp.