Question about Nitro BMW-481 Car Audio Amplifier

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No Power :( NEED HELP

The green Light comes on, The led lights, light up... But absolutely no sound. Thought it had sometyhing to do with the rca cables or rem cord... tried everything!... ANY HELP PLEASE?

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Re: No Power :( NEED HELP

Check the connection with the subs. See if all wires are connected or check for any break in the wire. Also make sure that the RCA's are connected to the subwoofer output at the back of your deck. Also check setting on your AMP.

Posted on Dec 04, 2007

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Have a kenwood sw-32ht green light comes on but have no sound, please help on what it could be

Check the signal or rca's. Make sure the sub is turned on from the headunit. Sounds like you have power but no signal. Also, make sure your power wire has 12 volts. I've seen where the light turns on because remote wire has power, but no power from the battery wire.

Oct 17, 2014 | Car Amplifiers

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I have checked all connections to my amp battery,head unit,remote or trigger wire,fuses,power cable,rca leads,ground wire,amp has a green led light on it indicating if it works ok,red if it`s not,light...

Your amp could be in protection mode! Sometimes turning up to high or wires touching will put in protection mode! It will have to be unplugged for a day or two to drain all power out of the memory. Leave accessorie/ignition wire hooked up, just not power and ground wiring. It should reset itself.

Jan 22, 2010 | Lightning Audio B4.250.2 Car Amp

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Hi there just picked up a jbl bp 1200 for good price although just wired it up and turned the key to find the red light come on few seconds then solid green and no sound...checked ground,remote wire rca...

Most amps do a "power up" where all the lights can come on, then settle into "green light" or some sort of "ready status" light comes on. The red or yellow lights can indicate "protection mode" (a bad amp) and green is the universal signal for okay. - So try this - Double check your connections and the amp. Pay close attention to the settings on the amp before you declare it not working. I have had many amps (especially newer ones) cause problems from a simple switch that was in the wrong position. Be sure to use good power and audio cables matched to your amps capabilities with good strong grounds on a clean non-painted metal surface. If all is in order from there start checking your signal from the deck to the amp. You can also check manufactures website for the manual, (if you didn't get one) looking at it may give a clue about proper switch configurations and hook-ups. Let me know if you need additional info concerning these idea's.

Apr 15, 2009 | JBL BP1200.1 Car Audio Amplifier

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LED Light is on, but no sound from sub at all.. Have double backed on all wires but still nothing! HELP!!

if you change amps and it goes on protection the speakers are blown causing the amp to protect try changing speakers

Mar 24, 2008 | Car Amplifiers

2 Answers

LED Light is on, but no sound from sub at all.. Have double backed on all wires but still nothing! HELP!!

If you've overheated it a number of times, it's possible that you've damaged the amp and it's trying to protect itself even though it's too late. Try disconnecting the sub from the amp. If there's no change, then there's a problem within the amp. It could be a thermal switch or possibly a stressed amplifier module.

Hope this helps. Good Luck!!

Mar 21, 2008 | Car Amplifiers

1 Answer

LED Light is on, but no sound from sub at all.. Have double backed on all wires but still nothing! HELP!!

I just brought mine to the shop for the same reason. I thought it was something big but it was just a bad fuse. It wasn't blown so when i checked it, I didn't think anything of. If you're using an AGU fuse, try and remove the fuse and touch the two ends of your power wire together and if it's the fuse it should cut on

Mar 18, 2008 | Kenwood KAC-8103D Car Audio Amplifier

1 Answer

LED Light green but no sound.

disconnect all power cables first then short between G&P G&R try again with only one speaker at a time.

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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.

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Amp isn't putting out any sound

I have a Digital Audio model-DA2200W, Was listening to my tunes loud as always....then the subs quit bumpin...checked the subs cuz i thought i blew em...theyre fine...The power on the amp is still light and all..just no output..I opened it up to see if anything looked burnt looks it toast or can i fix it??

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