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Any ideas on non-working home theater projector - "In Focus" Screenplay 4805? - screenplay projectors

After a home theater projector with integrated (attatched to the roof) - In Focus Screenplay 4805th However, the lamp burned a few months ago and replaced ($ 350) - has worked well. Just today, we look, the picture went black (no flash or pop or something) and the projector will sound as if they worked, then left, then back, etc. But no picture. When working properly, a little background noise (I think the fans to cool the bulb on and off as needed), but the tone too often as he tried to work, but do not, then try again repeated. Even after stopping and restarting nothing new about -. I picked up the ball and do not see anything obviously wrong. I do not want to see another $ 350 and that it is the lamp to spend.
Anyone with similar problems or ideas, without spending much money for a service call to be tested?

Thanks