Question about Jensen KA3 Car Audio Amplifier

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Both green and red ligt or on my jensen ka3 i dont know what it means i had it working b4 i swaped my subs for some new ones and the amp dosent work now.i dont know if is because of the red light but i have no idea what the red light stands for so can some one help me out plz

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Re: Both green and red ligt or on my jensen ka3 i dont...

Generally, the power light is green and the protect light is red. If the protect light is on there could be a short in the wiring or there could be an internal fault in the amp.

Disconnect all speaker wires from the speaker terminals of the amp and disconnect signal cables from the amp. If it powers up, the wiring needs to be checked. If it still shuts down (goes into protection), the amp likely has blown output transistors.

Posted on Dec 28, 2007

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Hey i dont know to much about amps, but me and my friend (he knows a decent amount about amps) would plug the power into the amp and the green light would come on. Though when we plug it into the subs, the...

Are you connecting positive to positive and negative to negative from the sub to the amp? If so, try positive to positve (+) in the far left channel and then the negative to negative (-) on the far left channel to. If no luck do the same in the other channel with one sub at a time. Try one sub at a time, Dont try an connect 2 or more subs to one channel as this would cause the amp to go into protect mode (red light you describe). Usually the positive wire has either a line down the wire, writting on it or has a red seperate wire with it when wire end stripped to connect it. Hope this helps and please rate...

Mar 11, 2011 | Bazooka EL1500 Car Audio Amplifier

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My amp was working good and i didnt use like for two months and know it doesnt work the green light turns on but the red light too of over current and i cant hear nothing i dont know what is it..

if it turns red its a protection light you most likely got the ohms wired wrong on the speakers and the amp is going into protect mode so you dont fry it or the subs

Mar 04, 2011 | Sony XM-2150GSX Car Audio Amplifier

2 Answers

My subs don't bump to the beat, they just go THUMP THUMP THUMP...

It sounds like you need to ask for pro help mate, mybe the amp just needs setting properly, Is the amp on bypass for bass, or does the amp run the complete system

Jun 13, 2009 | Cadence TXA 750D High Power Mono Amplifier...

1 Answer

Amp works when beaten

It sounds like you have a broken connection in the amplifier. The first thing to check is the fuse. Sometimes the contacts become weak on the fuse holder and the connection becomes intermittent. Any other troubleshooting would require opening up the amp. Any repairs would require resoldering the broken connection.

Let me know if you have any other questions.

Sep 22, 2008 | Jensen XA2250 Car Audio Amplifier

1 Answer

Fusion sub n amp dont work

didi u check ur fuses in the amp..if not there check the fuse under the hood on your power wire.i had the same problem

Jul 27, 2008 | Car Amplifiers

1 Answer

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Ill go for a better GROUND , sounds like its not grounded properly and thats why the RED LIGHT . DO A RE CHECK on the installation . hope this helps

Apr 29, 2008 | Jensen A300HLX Car Audio Amplifier

1 Answer

Jensen 300 amp unknown

go to the harman kardon site and download the owners manual and u can order any thing you need including a new wiring harness

Apr 05, 2007 | Jensen LXA300 Car Audio Amplifier

1 Answer

Amp not working

What's the problem? It's not unusual to get a spark when you connect power to an amplifier; there are capacitors in the amp that will charge. Is the amplifier not working?

Jan 29, 2007 | Jensen KA3 Car Audio Amplifier

2 Answers

Kenwood kac-9152d

by jump do you mean all it does is thump and no sound besides thumping noise? if so put a better ground on your amp, double grounds work the best. please reply

Oct 06, 2006 | Kenwood KAC-9152D Car Audio Amplifier

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