Kenwood KAC-7203 Car Amp Logo

Question about Kenwood KAC-7203 Car Amp

1 Answer

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

Posted by cweldon20732 on

1 Answer

Professor_V

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Novelist:

    An expert who has written 50 answers of more than 400 characters.

    Governor:

    An expert whose answer got voted for 20 times.

  • Expert
  • 93 Answers

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

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

0helpful
1answer

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
0helpful
1answer

Need Wireing diagram to hook up a Wire Harness to a Kenwood BT645U to a 2000 Jeep Grand Cherokee

2000 Jeep Grand Cherokee Stereo Wiring Constant 12V+ Red/White Switched 12V+ White/Red Ground Black Illumination n/a Dimmer Orange Antenna Right Front Front Speakers 6" x 9" Doors Left Front (+) Light Green/Red Left Front (-) Light Green/Green Right Front (+) Light Blue/Red Right Front (-) Light Blue/Black Rear Speakers 6 1/2" Rear Door Left Rear (+) Dark Green/White Left Rear (-) White/Dark Green Right Rear (+) White/Purple Right Rear (-) Tan/Dark Green


Kenwood Wires:

Red: Switched 12volt
Yellow: Constant 12volt
Black: Chassis Ground
Blue: Not used
Light Blue/Yellow: Steering wheel control
Brown: Mute Control
Blue White: Power Antennae (or Amplifier remote turn on)
White - White/black: +/- left front
Gray - Gray/black: +/- right front
Green - Green/Black: Left rear
Purple - Purple/black: right rear
0helpful
2answers
0helpful
2answers
3helpful
1answer

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!
1helpful
2answers

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
0helpful
1answer

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
0helpful
1answer

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.
5helpful
3answers

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

0helpful
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.
Not finding what you are looking for?

1,017 views

Ask a Question

Usually answered in minutes!

Top Kenwood Car Audio & Video Experts

xxxxxx xxx

Level 3 Expert

5061 Answers

Marvin
Marvin

Level 3 Expert

85241 Answers

The Knight
The Knight

Level 3 Expert

76851 Answers

Are you a Kenwood Car Audio and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...