Not getting power to amp? - Audio & Electronics Forum

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Not getting power to amp?
Thursday, March 16, 2006 11:31 AM
Ok i got another kenwood amp, and i first tested it with my subs before finishing all connections.

Ive checked and recheck all the fuses but no power.

The power wire is the same from my last amp, its a 4 awg, and a 4 awg ground.

i just dont know?

any suggestions?




Re: Not getting power to amp?
Thursday, March 16, 2006 1:07 PM
Some amps have to have a signal wire running to them from the head unit. If it isn't hooked up then they'll never get the signal to turn on. Check this.

Also, check the ground connection that is connecting to your chasis. Maybe the wire slipped out of the connector? It's happened to me before.

Good luck.



Re: Not getting power to amp?
Thursday, March 16, 2006 1:29 PM
well, i installed a new ground wire, new connections, new fuses front and rear, new power wire terminal.

It has a remote turn on wire and has Rca's and the subs are wired up and the gain was set correctly when it worked before mounting it to the box.






Re: Not getting power to amp?
Thursday, March 16, 2006 1:43 PM
2 things to try:

1: Make sure that if you have a subwoofer setting on your deck, that it is turned to on. I have forgot to do that before.

2: Use a test light on your power wire, and your remote wire to make sure that they are getting power.

If none of that works, go get your amp looked at
Re: Not getting power to amp?
Friday, March 17, 2006 11:38 PM
if your deck isnt getting power and you have ur ground and power wire all hooked up and you KNOW they're getting power...just run a wire from the battery wire terminal and touch it on the remote turn on terminal and if it doesnt turn on...then u got problems lol

wysiwyg wrote:i would say they bang, they don't really pound so much. but if
you want to bump, then they will bump and hit real hard and a lot good.

LOL
Re: Not getting power to amp?
Saturday, March 18, 2006 7:50 PM
So if the remote turn on doesnt work, its a head unit problem?

Do i understand that correctly?



Re: Not getting power to amp?
Saturday, March 18, 2006 10:29 PM
it could be a few things if the remote isint getting power



Re: Not getting power to amp?
Sunday, March 19, 2006 12:05 AM
well did you run a wire from the positive wire from battery to the remote thing and the amp turned on?

wysiwyg wrote:i would say they bang, they don't really pound so much. but if
you want to bump, then they will bump and hit real hard and a lot good.

LOL
Re: Not getting power to amp?
Sunday, March 19, 2006 12:12 AM
sorry @!#$ in my post before...i mean to say AMP instead of DECK

wysiwyg wrote:i would say they bang, they don't really pound so much. but if
you want to bump, then they will bump and hit real hard and a lot good.

LOL
Re: Not getting power to amp?
Sunday, March 19, 2006 9:30 AM
The remote wire suggeation is a good one to see if the amp is getting the proper power to begin with! If it works from the battery then you need to check your connection to the back of your headunit. As said before you also need to see if your sub seting is turned on, are your fuses blown, the best place for a ground is the posts for your back seat!! There are four bolts! Loosen them and then take two completely off! Slip the ground wire over the bolt and tighten them all back down! I run 4 woofers and 3000 watts to those grounds and I hit 145 db's every weekend without problems! Ust O ring terminals so that they don't slip off!! If you use U shaped terminals they could slip off the ground post after a few good hits! You might need to use a Dremal to make the hole a little bigger, but youi will never have to test it again for ground connections. Eliminte youir possibilties one at a time!!
Re: Not getting power to amp?
Sunday, March 19, 2006 10:57 AM
use a multimeter and check for voltage at the remote-turn on...if its there, check the power and ground...neg to the ground, pos to the pos terminal. if you get a spark and/or a reading on the meter, your wiring is good, your amp is either a blown fuse, or is f*cked.


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Re: Not getting power to amp?
Sunday, March 19, 2006 1:16 PM
Well i have power to the power wire, ground is good though i have to upgrade the wire from 8 awg to 4awg. and i am getting voltage from the remote turn on. All the fuses are new and good. I just finished rewiring my head unit. However i do not get any form of spark if i touch the pos wire to the ground wire, which i always thought to be strange.

And every time i connected the battery directly to the remote turn on wire, the fan on the amp would move alittle bit.

So im guessing the amp is shot then.

Sorry lundis, i had posted this pic in your thread my accident, please dont mind the double pic.





Re: Not getting power to amp?
Sunday, March 19, 2006 9:20 PM
why is your ground wire, like not even half the size of the power wire?

number 2 this is real easy, take a jumper, jump from the + side on the amp right to remote terminal side and see if it powers up after you fix your grounding issue


Its not how fast your car goes....its how much nerve the driver has to push it that fast.
Re: Not getting power to amp?
Monday, March 20, 2006 4:18 AM
LittleBill wrote:why is your ground wire, like not even half the size of the power wire?

number 2 this is real easy, take a jumper, jump from the + side on the amp right to remote terminal side and see if it powers up after you fix your grounding issue


I guess you missed this part.

Quote:

ground is good though i have to upgrade the wire from 8 awg to 4awg


And like a said:

[IMG]And every time i connected the battery directly to the remote turn on wire, the fan on the amp would move alittle bit.[/IMG]



so little bell, read my post not the picture.



Re: Not getting power to amp?
Monday, March 20, 2006 5:16 AM
Well I read the whole post but I'm with the other guy. your ground needs to be absolutly perfect for anything to happen.and with it being that small with a 4awg power then its going to get over powered. The gounrd should always match the power. Also on that remote, check that butt-connector right there at it, try cutting that butt-connector off and hooking it up. The less breaks in the wire that you have the less chance you have of something not working.



Re: Not getting power to amp?
Monday, March 20, 2006 6:32 AM
The other thing that I was wondering, is if your amp turns on when you have the radio on. I'm sure that you were testing while a cd was in right?? A lot of times in the rush that we are in to hook our $#!& up we grab the first blue wire we can find and run it to the remote hookup on the amp. But the problem with that is that the power antenna wire is also blue. There are a lot of times that you can have your remote wire hooked up to that so it will only power the amp up if the deck is on "FM Radio" and not on the CD player. Just somethin to think about.
Re: Not getting power to amp?
Monday, March 20, 2006 11:53 AM
05CaVaLiErBaRkIn3Rd wrote:Well I read the whole post but I'm with the other guy. your ground needs to be absolutly perfect for anything to happen.and with it being that small with a 4awg power then its going to get over powered. The gounrd should always match the power. Also on that remote, check that butt-connector right there at it, try cutting that butt-connector off and hooking it up. The less breaks in the wire that you have the less chance you have of something not working.




I already know about the ground, yeesh. And it ran fine for a good 30 mins then shut off. Next pay check im getting some more 4 awg wire for the ground.

There is no butt connector for the remote wire. Its one continious wire.



Quote:

The other thing that I was wondering, is if your amp turns on when you have the radio on. I'm sure that you were testing while a cd was in right?? A lot of times in the rush that we are in to hook our $#!& up we grab the first blue wire we can find and run it to the remote hookup on the amp. But the problem with that is that the power antenna wire is also blue. There are a lot of times that you can have your remote wire hooked up to that so it will only power the amp up if the deck is on "FM Radio" and not on the CD player. Just somethin to think about.




rrrr. The remote wire is the same wire as where my old amp was hooked up too. nothing there has changed, same wire, no butt connectors, no breaks, correct wire. It HAS WORKED in the past. and there is no power antenna wire on my harness.

Also in pics below to show old harness and new harness.
Old harness was just taped together, for my new harness, i soldered taped and heat shrinked all connections.





OLD HARNESS




NEW HARNESS








Re: Not getting power to amp?
Tuesday, March 21, 2006 3:41 AM
Ok? judging by both those harnesses I can tell you that from experience in "f"ing up, that is where you need to start. Take all that junk apart. With the wires not touching each other see if it works. If not, you gotta go through and redo every one of those and take your time until you find it.




Re: Not getting power to amp?
Tuesday, March 21, 2006 3:51 AM
Earl Rourk wrote:Ok? judging by both those harnesses I can tell you that from experience in "f"ing up, that is where you need to start. Take all that junk apart. With the wires not touching each other see if it works. If not, you gotta go through and redo every one of those and take your time until you find it.



DID that, thats why i redid the harness. everything works except for the amp.



Re: Not getting power to amp?
Tuesday, March 21, 2006 11:52 AM
I known that you are using the same wire for your remote that you have in the past, but there is a possibilty that coincidentally around the same time that you swapped amps, there is a spot in your remote wire that has rubbed through the protective coating and there is bare wire showing, the easiest way to check without ripping all of that out is to put in a temp wire that runs directly from your deck to your amp for the remote wire, and you can leave it in the open, just long enough to see if it works, I know it sounds like I am beating a dead horse, but I am just trying to help you from experiences that I have had.
Re: Not getting power to amp?
Tuesday, March 21, 2006 1:36 PM
Ok ill try it tommorow.




Re: Not getting power to amp?
Wednesday, March 22, 2006 5:28 PM
i think your amp is toasted bro. by all means, test the f*ck out of it...but my money is on TOASTYYYYY


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Re: Not getting power to amp?
Wednesday, March 22, 2006 7:23 PM
I agree lundis, but hey why not try, right?



Re: Not getting power to amp?
Friday, March 24, 2006 12:48 PM
absolutley. any luck yet?


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this useless post brought to you by the alcoholic known as LUNDiS



Re: Not getting power to amp?
Friday, March 24, 2006 1:41 PM
No luck yet, I fixed my gauge problem though, had to remove the upper part of the dash to do it, and while i was there, tapped the cig wire for an extra 12v outlet elsewhere.
which is a straight foward thing to do, but im still gonna do a write up of jbody knight for da noobs.



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