Question about Kenwood KAC-7202 Car Audio Amplifier

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KAC-7202 will not put out sound. Put in other amp works.

I have the Kenwood KAC-7202. I opened the amp up and there is no soot or burned spots. It powers up (LED Lit), fan runs just no sound any suggestions. I have been seeing things about zener diodes????

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  • Anonymous Mar 31, 2009

    Same thing. I think I caused it though. I was taking the speaker leads of and accidently touched the casing at the same time.

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  • 60 Answers

When you switch on the amp did the main amp ic produce heat. If does not change the main amp ic.

Posted on Feb 14, 2009

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1 Answer

Kenwoood kac-7202 redlight/no output


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

Jan 29, 2014 | Kenwood KAC-7202 Car Audio Amplifier

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Where do i connect the power control wire to ? I have a kenwood amp kac 7202, I'm connecting it to a stock cd receiver in toyota corolla 2004


Hello sophnettliss,

Most stock receivers do not have a dedicated amp remote lead and your 2004 Corolla is no exception.

The amp remote can be connected to any switched and fused 12V + source including the OEM receiver accessory wire which is the gray wire in your receiver harness.

Hope this helps.

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I have an alpine head unit and a kenwood 1000 watt amp. I have two 12" subwoofers hooked up to the amp and thats it. I got my tweeters, and door speakers powered by my head unit. The bass was cutting in...


your amp may have burned out or try checking the fuse in the amp and the car also your channels may be burned or you may jus have water damage to the amp

Feb 18, 2009 | Kenwood KAC-7202 Car Audio Amplifier

2 Answers

Kac-7202


Since you haven't received a response, I'll try to help you through the troubleshooting. The amp probably has shorted output transistors but before you start checking components, you need to 'confirm' that you have no bad connections in the power line.

With your multimeter set to DC volts, the black meter lead on the ground terminal of the amp (not on the point where the ground wire connected to the vehicle) 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 goes below ~11 volts when the amp shuts off, you need to check the wiring feeding whichever line is too low.

If the voltage remains near or above 12v, disconnect all speaker wires from the speaker terminals of the amp and disconnect signal cables from the amp. If it powers up normally, the wiring needs to be checked. If it still shuts down, the amp likely has blown output transistors.

Let me know what you find.

Apr 24, 2008 | Kenwood KAC-7202 Car Audio Amplifier

3 Answers

Kenwood KAC-7202 wont turn on


I have found the problem to my Kenwood KAC-7202. The amps fan was the only thing that would come on thats it. So I started checkin zener diodes cause all transistors checked out fine. So I remember readinf about a guy that had same problem and took it to a shop and they said it was some diodes. Well, thats what I was thinkin or the transformer. It turned out that 1 zener diode was no good, diode D9 1ss133. I took a zener out of an old vcr I use for parts and put it in and the fan came on as usual then the red light. Then I hooked my mp3 player to the rca input and hooked up some speakers and it works great. Hope this helps you other guys with the same problem. Check your zener diodes with a digital volt meter, if you get any measurement other than the reverse impedance which will read between 600 and 1200 ohms some lower or higher and then reverse the leads on your meter and if you get any reading it's no good and the reading will be 0-50 cause mine read 047 ohms.

Feb 09, 2008 | Kenwood KAC-7202 Car Audio Amplifier

1 Answer

Kenwood kac-7202 amp


150/ch into 4 ohms
230/ch into 2 ohms

Spec Sheet

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2 Answers

Kenwood 7202 Amp that is blowing fuses


If your speakers are wired for an impedance below 4 ohms mono or 2 ohms stereo, that would make it shut off. If you have a speaker wire shorted to ground, it would also cause the amp to go into protection.

 

If the speakers are not the problem, it may be shutting down because the voltage at the amp is dropping too low.

 

Oct 19, 2007 | Kenwood KAC-7202 Car Audio Amplifier

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