Question about Kenwood KAC-848 Car Audio Amplifier

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My sons kac 848 amp just stopped working

The power light is out. 12v ia available at the terminals both fuses are fine

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There is an Internal Fuse on Most of these Models that will blow from time to time. You might also check the Ground Connection. A loose Ground can cause the Same Problem. Please Rate My Response! Thanks!

Posted on Feb 02, 2009

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you blew the output Ic's (amps one or more ) you can fix this by replacing the output IC's

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If the light is out, it's not getting power or is in protect mode to prevent further damage. If you have a voltmeter, measure the voltage between GND and 12V (BAT terminal) and also between GND and REM terminal (with the car and radio on).

If neither has voltage, your ground wire has come loose. If the bat terminal has no voltage, your fuse under the hood is blown (they can blow and still look fine sometimes) or your power wire is loose or broken. If the REM terminal has no power, your wire is broke or has come loose from the back of the stereo.

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My son accidentally the pos and neg speaker wires together and the fuses blew on the amp and now the power light wont come on at all do you think the amp is damaged?


If I had to guess by touching the positive and the negative terminals together it probably fried up the transistors. While back I did the same to my amp and poof amp no longer worked. Took the amp apart to find the transistors fried up. Ordered them from the manufacturer but never installed them, ended up buying a new amp. Mainly, replacing the amp doesn't mean it would fix the problem....

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It probably burned a trace on the circuit board.

With the amp hooked up normally and the head unit on (so the amp will have remote voltage), do you read 12v DC anywhere on the case of the amp (black meter probe on the ground terminal of the amp)?

If there is no voltage on the case, confirm that you have 12v on the B+ and remote terminals of the amp (black probe on ground terminal of the amp).

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use a multimeter to check for power on the +ve wire, could be your fuse, it only rus a sec when you jumper the remote to +ve because the remote cannot give out the nessary current to run the amp.

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