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cyber02000, this is because the power card can’t take the load of the projection. You don’t really need to change the whole power supply if you know your way around circuits. The first thing you need to do is a visual inspection, check if there’re any blown up capacitors or bad resistors which might be causing this. If you don’t see any just try and find out if there’s any bad IC by checking the short circuiting using a multi-meter.

ball grid array
 
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