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My kenwood amp wont turn on all the way i just hooked it up to my truck. the blue lights and the fan come on but the red light wont come on to power my subs

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REMOVE THE RCA INPUTS AND DISCONNECT THE SPEAKERS, THEN POWER THE AMPLIFIER UP WITH THIS NO INPUT, NO SPEAKER LOAD CONDITION. IF IT STILL DOES NOT POWER UP, VERIFY THAT THE POSITIVE AND ESPECIALLY THE GROUND CONNECTIONS, ALONG WITH THE REMOTE CONNECTIONS ARE 100%, THEN TRY AGAIN. IF STILL NOT POWERED UP, MEASURE THE REMOTE WIRE VOLTAGE TO INSURE THAT IT IS NOT LOWER THAN 11 VOLTS. IF YOU CANNOT MEASURE IT, THEN DISCONNECT THE REMOTE LEAD FROM THE AMPLIFIER AND TEMPORARILY INSTALL A JUMPER WIRE FROM THE POSITIVE POWER TERMINAL TO THE AMPS REMOTE TERMINAL WHICH WILL FORCE IT TO TURN ON. IF IS STILL DOES NOT POWER UP, THEN IT WILL HAVE TO BE SERVICED. LET ME KNOW IF YOU NEED FURTHER ASSISTANCE.....V

Posted on Jan 06, 2010

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Kenwoood kac-7202 redlight/no output
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Need Wireing diagram to hook up a Wire Harness to a Kenwood BT645U to a 2000 Jeep Grand Cherokee
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Kenwood Wires:

Red: Switched 12volt
Yellow: Constant 12volt
Black: Chassis Ground
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Brown: Mute Control
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Dec 21, 2010 • Car Audio & Video
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I have a Kenwood KAC-9103D hooked up to two 12" KFC 3011. My amp stopped working the other day after it worked fine for about a year the blue light for the fan lights up, the fan runs and the amp runs but...
your amp has a output section problem,contact eric @ Capital Audio & Electronics Repair in Tallahassee,FL 850-339-1130 wee repair all brands and models
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Mar 11, 2010 • Kenwood KAC-9103D Car Audio Amplifier
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KAC-9103D hooked up to two 12" KFC 3011. My amp stopped working the other day after it worked fine for about a year the blue light for the fan lights up and the amp runs but the red light flashes on and...
My best guess is that it would be your ground wire or even the power into your amp. I would check all the connections going to and from your amp
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Feb 22, 2010 • Kenwood KAC-9103D Car Audio Amplifier
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Amp will not come on ,no light
Yes!!!!!!!!!! Your remote wire is what tells your amplifier to turn on and off it won't work without it. Assuming your stereo headunit is an after market unit it has the correct wire for this. what you have to do is pull out you headunit, and in the back of the headunit where all the wires plug into your unit there is blue wire with a white stripe. this is the remote turn on wire. connect a wire to that blue n white wire and run it back to your amp, insert it into to the spot marked remote. turn your head unit on and your amp will power up... if you have all the rca cables hooked up your amp should be ready to go.... btw good choice on the amp, kenwood is the way to go!
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Aug 31, 2009 • Kenwood KAC-9152D Car Audio Amplifier
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Red Light
that means you probably have a shorted speaker wire, a bad speaker or the amp itself is bad, try disconnecting the speakers one at a time and see if it turns on or not. if the red light stays on with no speakers hooked up it means the amp is bad
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May 30, 2009 • Kenwood KAC-7252 Car Audio Amplifier
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Kenwood KAC-8401 light goes from blue to red when turned on
Either the amp is ad or the sub got shorted? You can check itby disconnecting the Sub and seeing if the amp comes on blue then. If yes, then the sub is shorted. If no, then the amp is shorted. Also chck the voltage AT THE AMP. Make sure that it is above 12 Volts.

Larry T
Winona Lake, IN
http://www.cybersoundsaudio.com/cybersounds/vehiclepics.html
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Dec 29, 2008 • Kenwood KAC-9152D Car Audio Amplifier
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Wiring instructions for kenwood kdc-mp8533
dark blue is the remote for the amp
light blue is the remote for a power ant. (or amp)
orange is for the light dimmer (when you turn your lights on it will not be so bright, optional)
black is ground
brown is if you have a button in your car for a cell phone it will mute it when pushed (optional)
red is power (acc power)
yellow is always on power(for the clock and presets)
the rca jacks are for the amp they should be used if using an amp (there wattages are preset for amps anyway)

hook up the rca's to your amps along with the dark or light blue wires and when you turn the stereo on the amp will come on everything else should be hooked up as stated above. Hope this helps.
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Jun 08, 2008 • Kenwood KDC-MP435U CD Player
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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.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/mark_b53a7494531bf96d

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Feb 09, 2008 • Kenwood KAC-7202 Car Audio Amplifier
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1answer

My kenwood kac7201 amp wont turn on but it has power to it
Recheck the voltage precisely like this:

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.
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Jan 22, 2008 • Kenwood KAC-7201 Car Audio Amplifier
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KAC-7203 Car Amp

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Kenwoood kac-7202 redlight/no output

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red light is the light meant to be red

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Be the first to answer Jul 28, 2013 • Kenwood KAC-7203 Car Amp
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My 40A fuse blows as soon as it comes into contact with the amp. I have a 4 gauge battery connection and a 8 gauge grounding connection. I have checked all wires and re-grounded it several times but the fuses still seems to blow.
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Be the first to answer Jun 27, 2013 • Kenwood KAC-7203 Car Amp
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Kenwood amp wont work, all lights are on so i recently switched my amp to a different vehilce and installed a new wiring kit for the amp and everything is hooked up properly but im getting no sound output. all the lights on my amp are on including the red light and the blue led light. the thing is i dont remember if the red light was supposed to stay on could it be in protection mode? also i used a 700 watt wiring kit for my kenwood amp that has a max output 1000w could i be using the wrong wiring kit?
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Be the first to answer Jul 02, 2012 • Kenwood KAC-7203 Car Amp
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amp comes on then turn off i been using my amp for 4 years and now it wont come on but when i unplug the ground wire and plug it back in the amp will turn on for 1/2 sec to 1 sec then turns off
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Be the first to answer Feb 06, 2012 • Kenwood KAC-7203 Car Amp

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