Question about Kenwood KAC-728S Car Audio Amplifier

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Speaker outputs blown on 4 channel amp

I have a Kenwood 4 channel 400 watts amp that I run to the interior speakers. It was running fine until recently the amp cut off and there's no sound coming thru it. The power light comes on, and there is a buzzing noise from one channel but the rest there's no output. How would I fix this amp? If I get it fixed by someone, how much am I looking to spend?

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  • Anonymous Jan 09, 2009

    i have a 1 channel lanzar rack went out, can i fix it myself, im a pretty good solderer

  • Anonymous Mar 23, 2014

    What would cost to replace a blowned channel or any other part that's nessesary??



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The outputs should be replaced in pairs, there are 2 to 4 pairs, but you sould only need 1 pair replaced. these transistors typically range between 10 to 30 cdn each + labour, look for 1 to 1.5h to replace & test the unit after repair. check your local repair shop for their rates. good luck

Posted on Nov 30, 2006


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