Question about Kenwood KAC-9103D Car Audio Amplifier

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Repairing a kenwood amp

I'm trying to repair this kenwood amp because im not getting anything when its connected. I need advice as far as do it your self maintenance. any suggestions?

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Check for dry joints. mien had same problem

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With your multimeter set to DC volts, the black meter lead on the ground terminal of the amp and the head unit on (so the amp will have remote voltage applied), touch the red lead alternately to the B+ and remote terminals of the amp. If the voltage is below ~11 volts, you need to check the wiring feeding whichever line is too low.

Posted on Dec 20, 2007


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I have a kenwood Auto video surround receiver DR / 409 how to reset it

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Kenwood amp repair

Need more specific information on the problem. Try contacting Kenwood tech support for repair info or to download manuals. etc.

Jun 07, 2015 | Kenwood Car Audio & Video

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Kenwood VR-507 Now only get sound from 1 front speaker. all other speakers have stopped. Have not changed anything.

PROCESS OF ELIMINATION: connect each of the other speaker in the working to check to see if the wires and other speakers are working. If all speaker play when connected to the working channel check all other cables and connections....use the tuner as an working source to test. If that doesn't help then you may have an bad channel in your amp and may need to be repaired.

Oct 31, 2009 | Kenwood VR-507 Receiver

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KAC-8070 kenwood 4-channel power amp

Audio section
Max Power Output (4 ohms, 1kHz)
Rear 70W + 70W
Front 35W + 35W
Max Power Output (4 ohms, 1kHz, 10% THD)
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Sep 27, 2009 | Kenwood KAC-8101D Car Audio Amplifier

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Im not sure wich the right channel to use on my amp to bridge it to my subs, because it goes (+ + , - -) as opposed to (+ - , + -). do i use the possotive on the far left and the negative on the far right...

Hi there. It should definately be the far right and far left, no doubt. Ther should also be a awitch to drop the frequency to about 80htz. If not, the amp should drop the frequency by just connecting it the way you wanted to

May 07, 2009 | Kenwood KAC-9152D Car Audio Amplifier

1 Answer

Blown amp, on circuit board, connecting fuse and power connect.

These amplifiers dont employ reverse polarity protection that most higher priced ones do.
The amplifier(s) are definately in need of repair - probably power supply - IF boss sells parts.
Chances are, however, the repair will meet or exceed the cost of a new (appropriately rated) entry level amplifier.
Just about anything can be repaired.... question is, are you willing to pay?

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Kenwood KA-127 P-off response

This unit is likely to be in "protect" mode. This means that a problem has been detected it the final stage of the amplifier section and the speakers are disabled to prevent damage to either the speakers of the amp. This can be casued by a poor solder connection or defective components inside the amp. Without taking internal measurements, I can not say for sure. Expect a parts cost in the $25-$40 range for this repair. Add in the local labor rate for the total repair cost.


Nov 30, 2008 | Audio Players & Recorders

1 Answer


If it's only 2 months old, it should be under warranty. Have you tried to get it repaired under warranty?

Any car audio repair shop should be able to repair it.

If you want to repair it yourself, it's possible but you'd need basic test equipment and soldering/desoldering tools.

The following page shows you the basics for amp repair. Your amp is somewhat different than the one shown but the troubleshooting/repair procedure would be similar.

Basic Amp Repair Primer

May 16, 2008 | Kenwood KAC-8103D Car Audio Amplifier

1 Answer

Kenwood amp

how big the amp dont forget those thing take lots of juice you need a big wire front battery to amp when the engine running it should be 13.8 to 14.5 volt if anything less than that battery wont get the charge up and check for good ground cheers and dont forget to rate this p.s any other question about our charging system or anything else dont hesitate im ear

Jan 18, 2008 | Kenwood KAC-9102D Car Audio Amplifier

1 Answer

Blown amp

hi, try connecting the power b+ and gnd and remote turn on cables only (dont connect rca input or any spks), if amp doesnt turn on you will have to take in for repair. no need to buy new amp, coz problem could be a burnt pcb track or even a faulty remote or FET circuit.if amp turns on then connect other cables slowly and monitor the power lite as you do connections. you may have a faulty spk load that will cause amp to stay off or in protection mode. cheers

Jul 22, 2007 | Kenwood KAC-7202 Car Audio Amplifier

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