Question about Kenwood KAC-8402 Car Audio Amplifier

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I have a Kenwood 8402 and when I turn on the Stereo the power light blinks on and off and I get no sound from the equipment on that amp. any ideas whats this means?

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Posted on Jan 02, 2017

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SOURCE: how do i get my kenwood kac-8402 out of protection

first thing first open it up ull need to check ur heat sinks and capacitorsand see if any of them are blownd if there are blowend replace the bownd once. and try it

Posted on Jul 08, 2009

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SOURCE: leads for old kenwood car stereo amps

Hey wdalley69, I've got the KAC-8070. My setup has the crossover module for it.

Posted on Feb 27, 2010

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the standby light should be on if the unit is not 'ON' if you want the 894 to turn on when you power up the 996, then you will have to plug the ac for the 894 into the 'switched' ac outlet on the back of the 996
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How do I connect my iPod to a stereo Kenwood


<p>The superior audio quality thanks to the Kenwood stereo system is as good as any on the market. However, many of Kenwood audio receivers contain no iPod connection port. Even the business hubs of high-end entertainment that interface with the computer via USB cannot provide connectivity to an iPod. But that does not mean you cannot high-quality audio through your stereo Kenwood iPod. <br /> <p><br /> <p>1. Put your Kenwood stereo. Connect devices with the stereo turned on may lead to spikes in volume that can damage the speakers and even your ears. Turn up the stereo, so you can use the set of connectors on the back to see. <br /> <p><br /> <p>2. Connect the end of 3.5 mm 3.5 mm to RCA cable for the headset from your iPod. If you do not have a cable 3.5mm to RCA, you can buy one of the sound equipment stores or electronics stores like Radio Shack. <br /> <p><br /> <p>3. Connect the RCA end to your cable 3.5mm to RCA in an available port on the back of your Kenwood stereo. Put your Kenwood stereo, so you can access the buttons on the front. Turn the sound and select the channel of your iPod is connected. <br /> <p><br /> <p>4. Test the connection. Lower the volume on the Kenwood stereo and start a track playing on your iPod that you can recognize. Turn your volume until you play the iPod through the stereo to listen. If you hear no sound, check the "Monitor CD2/TAPE2" is active, and "Mute" is off <br />

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This means there is a problem with the system it is in the protect mode it will not come out of that mode untill repairs are made. More than likley the power amp is blown.

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Not powering up


is the REM wire from the unit hooked up to the amp?

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How do i get my kenwood kac-8402 out of protection


first thing first open it up ull need to check ur heat sinks and capacitorsand see if any of them are blownd if there are blowend replace the bownd once. and try it

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Amp powers on but no sound!?


CHECK ALL YOUR POWER AND GROUND CONNECTIONS, THE SMALLEST PINCH WILL MAKE IT DO THAT.

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What does it mean when the power light blinks on the amp?


genrally kenwood amps are power hungry amps so after playing for a while if it doesnt get the amount of amperage to make it work it will shut down cus you car cant charge the battery long enough for the use of that amp so my idea is try a farad capacitor and see if that helps good luck .......tk

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Volume turned up, kenwood shuts off briefly...


I had this same exact problem when my last older Kenwood Marine stereo cooked itself while I had it up loud for a few weekends on the lake. (smelled like it had burned inside). I went out and bought a new Kenwood KMR-550u stereo deck. (I do not have an additional amp). I hooked it up to the exact connections where my older Kenwood stereo unit had been hooked up, as I never had a problem with this for the past three years until it failed after smelling of burning elelectrical. I had chalked the problem up to heavy rain we had one day. Every time I turned up the volume, sometimes up to 27 out of 35 possible, or 29, or 32, the stereo would suddenly shut off as if I had turned it off. After a few seconds the stereo would come back on, but unless I was quick enough to turn down the volume it would do it again right away. Of course on a boat, we were beached in a cove and the engine was not running when I encountered this. I searched the internet finding hundreds of similar complaints and several dozen theories of all types, but only a couple that pointed me towards the power (voltage) idea as the problem. I put a volt meter on the positive & negative wires powering the stereo. I watched as I gradually turned up the volume, the voltage on the power wire gradually decreased from 12.5 volts, down into the 11 range, and as it hit 10.9 or 10.8 volts it shut off typically around a volume of 32. The red power wire in my boat that never seemed to have an issue with my old stereo until it fried was determined to actually be inadequate for the power flow for the new Kenwood, and probably was the culprit of my failed older unit. I offer this sound advice: Run a new pair of positive & negative wires directly from the battery (with an appropriate fuse of course (the deck has a 10 amp fuse in it's back so I would use that at the battery) to the stereo. Check the voltage as you turn the volume up into the high 20's and low 30's to ensure you are still getting voltage in the mid to high 11-12 volt range. The stereo is designed to require a minimum of 10.8 volts to operate, and when it drops below that it protects itself and shuts down.

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1 Answer

No Sound - boat stereo


Assuming that the four speakers are connected to the amplifier, then the amp is the most likely problem component. Does the amplifier show a power light when the system is turned on? Note that there is probably another fuse in the amplifier power wire, near the battery.

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