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Light does not come on -- we replaced the bulb--still dark

Green power indiucator comes on. Red lamp indicator comes on

Model EP 745, Optoma video projector

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Sounds like the lamp timer has reached it's limit. In your users manual you will find the proceedure on replacing the lamp and reseting the timer. Once this is done the projector should work.

Posted on Jan 08, 2009

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On some projection sets, there is an hours counter that is manualy resetable. Make sure that it is reset. If you can have a readout of the amount of hours used on the lamp this will tell you if this needs to be reset.

Normaly, when the set reacts as per your description, there is a cooling problem, or a fault in the power supply.

Also with your model of set, check to see if there are any safety switches that work with the cover or door for the lamp access. With the safety switch option, if the uPC thinks that the lamp is not properly enclosed or installed it will not allow for proper startup.


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its probably the ballast that is bad, call Optoma and you can buy a ballast for it, but you will probably want to have a pro do it, changing the ballast is a lot more involved than just changing the bulb, the ballast is what powers the bulb and it does go out on occasion.

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