Question about Kenwood KAC-5203 Car Audio Amplifier

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It jus turns off an i can't figure out y?

When i go 2 hook up the power 2 the amp the littlle red light comes on for a sec then goes back off an i had't figured out why?????

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Disconnect the speaker wires and signal cables from the amp and measure the voltage across the power and ground terminals with a multimeter.

With the black meter lead on the ground terminal of the amp and the red meter lead on the B+ terminal of the amp, the voltage should remain at or above 11 volts.

With the black lead again on the ground terminal of the amplifier and the red lead on the remote terminal of the amp, the voltage should again remain at or above 11 volts.

Posted on Oct 29, 2007

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I have a Sceptre X7G-Naga VI 17 inch LCD Monitor When I turn the monitor on and boot the computer I get the red light for a sec then the blue light comes on I will also see windows booting up but the...


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I hooked up 2 capacitors into my amp and every time I put power to it the amp shuts off and 10 seconds later a red light comes on for 5 seconds and the amp don't turn on, basically it goes into protect...


Well, I have no idea why you would have two capacitors on a 500 watt amp but, did you charge the capacitors? Have you tried the amp without the capacitors? What size power wire are you using?

Sep 20, 2010 | Kenwood KAC-9102D Car Audio Amplifier

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I have a kicker amp and my power light will come on once the music starts but not even a full sec later it fades into protect mode den bak green den red it jus keeps rempeating itself kan u help me


Maybe theres a loose connection in the power ic. causing the vivration of the casing when you on the volume control. you need a qualified technician to fix your problem.

Jul 02, 2010 | Kicker ZX10001 Car Audio Amplifier

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Nope it's not a high-to-low level converter problem, it's most likely a problem with one of two things. 1) either you've blown the output stage in the amplifier, or 2) you've hooked up your subs wrong and your amp is seeing to low of an impedance. The amp is supposed to be 1ohm stable, but we had the same problem. When the indicator light goes red it means that the amp has gone into protection mode, now you have to figure out why. If something in the amp goes bad or just disconnects from the board it will cause power protection mode. If you fry something on the board because you are running the amp to hard or at the wrong impedance it will go into thermal protection mode, however there's no simple way to figure out which has happened.

Have you tried hooking up some different subs to see if the problem remains? try this. If the problem no longer happens then you know it's your subs, if it does still happen then you'll know it's an internal problem.

Years ago I had a Kenwood KAC-821; long story short, I melted the main power wire right off of the board, everytime I turned the system up the amp would shut down.

Take you amp to an authorized dealer and have them bench test it for you.

Let me know what you find out.

Jul 14, 2008 | Kenwood KAC-7202 Car Audio Amplifier

1 Answer

Red light


It sounds like the output transistors have failed. Disconnect everything from the amp except for the B+, ground and remote and turn the amp on. If it goes into protect, the amp is in need of repair. If you want to repair it yourself, email power acoustic for the schematic.

Oct 02, 2007 | Power Acoustik LT-980/2 Car Audio...

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Power light


This could be a DC offset condition. Check you manual for what this means. Or other condition. First Disconnect the Subs and try it. If it still goes red then disconnect the RCA's and try it again. If the Led continues to go red after the click then the Amp is hosed. The Click you hear is an internal relay that cuts the subs in after a dely so you do not get the turn on THUMP of the radio at your subs.

Jul 08, 2007 | Hifonics Titan TX 8805 Multi-Channel Amp...

1 Answer

Mine is actually a q4000 4 channel amp


First of all, you MUST HOOK UP YOUR GROUND WIRE FIRST. You may have damaged it if you hooked your power and trigger wire first and then the ground wire. Unhook EVERYTHING except the hot wire, ground wire and trigger wire. If you still can't get the unit to come on then it is time for a trip to the repair shop. Good luck.

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