What is the model number of the projector?How long have you owned the unit?Do you wish to repair this yourself, if so and if needed, what type of electronic training do you have?What type of test equipment do you own?
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Without the model number I cannot supply specific information. Normally the bulb going bad does not cause the projector to shut down. I would suspect that the overheating is being caused by either a failing cooling fan or blocked air flow. Often dust can buildup inside the projector even with the filter. The projector does have a safety circuit in addition to a thermo switch that will shut the unit down if it detects a problem with the circuitry or cooling.
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The operators manual for this model can be downloaded or viewed by clicking here. What indicators are lit when the projector shuts down?