Optoma hd72 My projector will run for a couple of hours and the picture will look a little funny with distorted colors followed by a weird sound and the orange light comes on and picture goes off. I can turn off power and turn back on and it will do the same thing after about 30 minutes. Is it the bulb going bad?

SOURCE: color problems

i don't know if this will work but..... I have an Optoma h27 and we were having problems with the color and ours is mounted on the ceiling in inverted also; and after two years we started having color problems, come to find out that on the menu there is a option for high altitude and that had been turned to the "off" position (probably by our kids resetting all the options and not turning this one back on)..... after taking it to a tech that cleaned it for $97.00 and said there was no problems he could find, we played around with the remote/menu and came across this high altitude option and when we saw it was on the "off" position, we put it to the "on" position and another fan inside the projector came on and that helps to keep the inside of the projector cool at all time and helps from the color becoming weird..... Try this on yours and hopefully that will solve your problem.

SOURCE: The optoma hd72 projector lamp

I had this exact same problem. I have changed bulbs gotten 1000 or so hours from new bulb, changed the lamp driver and gotten about 600 more hours from new lamp driver. New lamp cost me $350, lamp driver cost me $120. Then I read on a page to try and flip it right side up, because I had it ceiling mounted upside down. I flipped it right side up and it works perfectly and has been working perfectly for 2 months now. I know it sounds stupid, but it actually worked for me, and it costs you nothing to try it. For some reason, gravity effects this unit.

SOURCE: Lamp light is solid orange/red; No Image on screen when pj on

Sounds like bulb to me best way to check is take it to a service centere and they will use a replacement or test bulb to find out for you , it may not be your bulb it may be your ballast circuit . ... regards Vortash

SOURCE: optoma hd72 bulb turning off

Just so everyone knows, This projector is notorious for the iris going bad. Which causes the projector to just shut off randomly. You will have to send it in for repair.

shane

SOURCE: orange light on lamp icon on Optoma EP732H Projector

This same thing happened to me, I removed the bulb and put it back in, it reset something and I was able to use the projector again.