Optoma EP7155 gets very hot and shuts down.

its definitly a cooling issue.the temp sensor is working because it shuts the unit down.when a lamp goes it goes just like a light bulb.you can open up the unit and locate the fan take it out and go to a radio shack a match it up to a universal fan.

If you have recently replaced the bulb you may need to reset the lamp counter in the projector menu.
If you have not replaced the bulb, the projector may be shutting down due to over-heating. Check that the projector is clear of as much dust and debris as possible.

if the lamp, lamp driver,power supply,Scaler Board and Formatter Board were good.
perhaps it is over temperature protection.
whether you checked with the air filter( dust filter) is clean or dirty?

global projectors is one source. You need to find out from Optoma the chip you need or take apart the machine and look at it. From China they run about 200 bucks. I've only done Mitsubishi so far.

Yes, if bulb was low price and was installed in old lamp casing then it is bulb that is not good and creating too much heat that exhaust fan can't throw out to make projector cool enough so temp sensor activates and send over heat signal to system control chip thus projector shuts down.
Please install original lamp that comes with casing to solve this issue.
If lamp was original then check exhaust fan that might be running slowly due to stiffness in bearing so temp sensor finds over temp in projector.
Hope these info will help you.
Thanks.

it could be the fan there are normally more than one, replacement is not hard just make sure you remember how it goes back together, a hint would be to get a digi cam for every part you take out, it may sound silly but very usefull esp when ordering parts, or make sure the lamps was replaced with the right one, if you still have the old one check the code numbers match... good luck

sorry too late, but the fans need to be replaced.

I had a similar problem with mine. I just put a fan on it, and that seemed to work...

It just needed more air flow and cooling...

hello,
This is an unfortunate incidence and i will send you the serviceable manual of your projector if you can send me your contact email address to my email.Yes ,there are instruction to follow to replace lamps in projector if not you might miss it. First you must confirm that the lamp is OK from the vendors you purchase before anything.

Bye.
[email protected]
Aniekeme Anthony.

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