Question about Peavey AMPLIFIER, 1000 WPC, DDT, 8/4/2 OHMS => Model PV2000 Car Audio Amplifier

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PEAVEY GUITAR AMP RENOWM 400

It making noise so loud , when i turn swich on.

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What type of noise is it making? If it sounds like a load hum, you may have a 60 cycle hum issue. This is caused by a capacitor not filtering out the 60 cycle ripple on the DC voltage supplied by the power supply. If you have this problem I would suggest measuring the power supply with a DC voltmeter first and writing this measurement down. Then I would suggest you plugging the amp into an isolation transformer and taking an oscilloscope (plugged into the wall)and measuring the DC voltage while the oscilloscope is set to AC if you see an AC ripple voltage higher then .1mv you have a bad filter capacitor or a bad voltage regulator.

Posted on Sep 10, 2007

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