Question about JVC KS-AR7501D Car Amp

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Everything is hooked up fine. the amp has power but no sound. I opened the amp and nothing looks burnt out.

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Try you sub(s) on another amp...if they play off of it then its either your speaker outputs off of the amp or your rcas or wire from your radio are bad.

Posted on Nov 22, 2010

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My amp blew the 20 amp fuses. Replaced and they blew as soon as the radio kicked in. Took the back off to look for any burnt connections or blown open/expanded capacitors or resistors. It smells like...


Remove all the wires from the amp including the remote turn on wire. Once you do that, after about 30 seconds the amp will reset. Hook the power up first, then the ground then the remote. Turn the unit on and check for power WITHOUT the speakers hooked up. If you get no power by now it's a good chance that the amp is cooked. If you do get power, try hoking up your speakers first on one channel then the other channel and then bridged. If it cuts out or off when you touch the speaker wires to one channel or the other, then that channel is no good. Hope this helps.

Mar 17, 2011 | Kenwood KAC-728S Car Audio Amplifier

1 Answer

The main problem I have having is I am getting power to my AMP but no power to the subs. I tested my AMP and subs in another car and everything worked so I know my hardware all works fine. I had someome...


okay , well you need to make sure all your conections are in the right spots, and that your IN LINE FUSE, between your amp and battery, the big glass one is not burnt, just take a look at the metal piece inside , if its a sold metal piece its good, if its burnt in half like a broken bridge it needs to be replaced. the next thing is the fuse on your amp, you need to make sure it is not burnt also. Check your remote that it is hooked up to the right wire. then check that your sub/speaker wires are connected properly and secure. YOUR GROUND WIRE IS HUGE HERE also. MAKE SURE IT IS GROUNDED TO A GOOD SPOT, YOU MAY HAVE TO MOVE IT AROUND A FEW TIMES TO FIND A GOOD GROUND!!!! if you check all of these things, it should work fine.. you can fiddle with your amp and bass settings levels. turn em up so when it works you know it, but not too much you dont wanna blow nothing :)

Mar 12, 2010 | Car Audio & Video

1 Answer

Amp burned out but fuses still good?


this is caused by inproper wiring from the speakers/subs to the amplifier.. an amp will still put out power to subs and speakers when it's wired improperly but it won't last for very long doing it... 6 months is longer than usual....

Dec 05, 2009 | MA Audio M1900XE Car Amp

1 Answer

No sound from unit, sometimes you get sound and other times nothing. When you do get sound everything works fine. Everything is hooked up properly, shut the unit off one day then turned it on next day and...


well there may be a simple solution, it could quite possibly be a fuse... if you open it up, after the power converter box and before it hits electronics, ther should be a fuse, this may be burnt out... but check inside before you go to buy a bunch of fuses as there are normally a couple spares inside, and if not, its easier to find the right replacement with the burnt out one in your hand!

Oct 11, 2009 | Onkyo TX-DS575 Receiver

1 Answer

Have power but no sound


U may have blown the High Out put.


Not sure but is the Protection Led light on the AMP. if it has one it should be green if everything is Fine. Red or Flashing Red is not good.

U can test it has a low in out put . But if only has RCA out then u may want check the Fuses inside the AMP... Be careful because if u open it up after it was just turn on u will get a ZAP if the amp is not fully discharged.Look for any burnt Resistors etc,

Let me know if this works!!
Thank U Jayson
Please feel free to rate my suggestions.
we depend on your votes!!!

Jul 04, 2009 | Clarion APX400.4M Car Audio Amplifier

1 Answer

My amplifier is not in protection mode everything works fine but my subwoofers play a very small sound . and it is not my subs at fault i already tested my subs and they work fine. i know theres a problem...


THERES A PROBLEM WITH YOUR RCA'S,IF YOU JIGGLE THEM WHILE THERE HOOKED UP TO THE AMP AND THEY MAKE THINGS LOUDER OR POP THAN YOU NEED TO GET THE RCA TERMINALS FIXED.

May 07, 2009 | Crunch Maxxsonics PZi 3000.1D Car Amp

1 Answer

No sound


the polarity was reversed and semiconductors are burnt at the output of the unit.

Aug 24, 2008 | Sirius Boombox for Select Satellite Radio...

2 Answers

Mtx 1501d no sound


There are a number of things that can cause it to act as you described. Have you pulled the covers off of it yet to see if you can see any problems?

If you do, disconnect power from it and don't touch ANYTHING on the board when ANY of the 3 LEDs (2 are not visible from the outside) are lit.

Aug 19, 2008 | MTX Thunder 1501D Car Audio Amplifier

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