Question about Pyramid PB1000 MOSFET Bridgeable Amplifier (1000-Watt; 2-Channel) Car Audio Amplifier

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The protect led has turned on and will not allow the amp to work. I've tried re-wiring the whole unit, changed the fuse to a high wattage, I've given it time to cool off in case it was over heating. Ive been using this amp for the past 10 months with no problems other than the occasional over heating when it would turn off. nothing serious. I've placed an older amp on my head unit and speakers and it works, so it's internal I would think, any suggestions would be great, I currently have it almost completely apart trying to figure this out. Thanks, -Jimmy-Dan

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Mosfet have a built in shut off incase of a blown resistor, if the resistor blows,it will shut down the amp, the resistors job is to inhibit power to prevent overheating, you will have to check the OHMS of each resistor to find out which one has gone......hope this was helpfull

Posted on Sep 15, 2009

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