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It appears that the mainboard is not getting a feedback from the fan movement. Check if any one of the fans is moving fast. If yes then this fan feedback is not being sensed by the motherboard. try to replace the fan by interchanging the fans if tge connectors are similar. trace tye fan circuit on the mainboard which finally sends the signals to the main chip on the motherboard.
SOURCE: When you turn on the projector it begins to warm
it's overheating. check the fans and blow out the dust with canned air. try it again.
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