Question about Kenwood KAC-728S Car Audio Amplifier

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No power turn on??

The positive from the battery is 12v the remote wire form my deck is reading 12v. now when i connect the pos and grd, it still reads 12v, as soon as i connect the remote it reads 8.5v from the pos and the remote to grd. and no power on to the amp. I just dont understand. Please help!

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  • twfjohan Dec 04, 2007

    yeah it happens only when i connect the 12v remote otherwise all voltages read correctly. I am starting to think its a blown cap.

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  • Master
  • 631 Answers

Does the voltage at the battery drop when you connect 12v to the remote terminal?

If not, there is too much resistance in the power/ground wiring.

If the voltage drops at the battery, either the battery is weak or the amp is drawing excessive current.

Posted on Dec 03, 2007

  • Perry Babin Dec 04, 2007

    Although it's possible for a capacitor to short, it's not nearly as common as shorted output tranistors. If the amp is drawing excessive current, I'd suspect shorted output transistors.

    Did you check to see if the voltage was dropping on the battery terminals?

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