it has lamp which has 2000hour in normal and 3000 in econom mode to shinenormal then it must be changed and your may already in this state and began such things.
We had a projector at our church that was hooked up to a light switch to turn it on or off and it kept burning the bulbs out. We had an expert come in and look over our situation and he said When you are finished with the projector let the fan keep blowing until the unit cools down. Ours had a switch for the bulb as well as one for the fan. We turned out the bulb and left the fan on for an extra ten to fifteen minutes. That let the bulb cool down gradually If you just cut the power the bulb over heats and will burn out. Yes turning on for a few minutes will burn it our quicker as well. Hope this helps.
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