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Please help: Amp turns on for a sec then turns back off

Old 07-17-2015, 07:49 PM
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Unhappy Please help: Amp turns on for a sec then turns back off

ok, so I have an Alpine MRP-M500 amp and when its off its at about 12.5~ volts , when i turn the amp on its drops to 5~7 volts. But, as soon as i turn my radio off it stays at 5~7 volts til i disconnect it from the batt. So, could i have a grounding problem internally? Cause the ground to the amp is fine and so is the power cable and it is a 10 gauge cable. Thanks!
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