No power to amp? But capacitor does have power - JeepForum.com

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post #1 of 19 Old 06-11-2013, 05:24 PM Thread Starter
PurpleTJ
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No power to amp? But capacitor does have power

My sound system quit working on me right before I left the country last year. Now I'm back and trying to fix it.

I have power coming from the battery and through a capacitor, then to the amp. The amp gets no power, but the capacitor does. Cap's ground is good, as is the amp's. No fuses are blown. Is my amp fried? Is there a way to check if it is?


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post #2 of 19 Old 06-12-2013, 08:36 PM
rubibluejay
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Place a temporary jumper wire from the amp's power wire to the amp's remote + trigger. If the amp turns on, you most likely have an issue with your head unit's remote (amp trigger) wire.

Post back up with the results.




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post #3 of 19 Old 06-13-2013, 01:02 PM Thread Starter
PurpleTJ
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Can I use any old wire for the jumper? or should it be a certain gauge?

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I took a poo once, and when I stood up, there was nothing in the toilet. I was positively terrified.
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Get a good tummy tuck with engine skid and treat it like a pimp does a crack whore.
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post #4 of 19 Old 06-13-2013, 01:43 PM
rubibluejay
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A piece of speaker wire will do.


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post #5 of 19 Old 06-13-2013, 03:07 PM
Indy
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Pretty much anything will work. The amps flowing through that wire are really really low. Its just enough that the amp knows the deck is on and it should do likewise.

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post #6 of 19 Old 06-14-2013, 09:58 AM Thread Starter
PurpleTJ
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Thanks. I'll give it another look when I get home today and come back with the results.

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Originally Posted by TheDustMan View Post
I took a poo once, and when I stood up, there was nothing in the toilet. I was positively terrified.
Quote:
Originally Posted by solarpower View Post
Get a good tummy tuck with engine skid and treat it like a pimp does a crack whore.
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post #7 of 19 Old 06-15-2013, 02:45 PM
kingcat400
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Also try jumping the cap. For the most part caps are useless anyway. Mostly used to mask a problem.
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post #8 of 19 Old 06-16-2013, 03:52 PM Thread Starter
PurpleTJ
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Originally Posted by kingcat400 View Post
Also try jumping the cap. For the most part caps are useless anyway. Mostly used to mask a problem.
I installed my cap to get rid of the speaker whine.

Still no results. Jumped between the power and remote wire, and also jumped the cap.

Quote:
Originally Posted by TheDustMan View Post
I took a poo once, and when I stood up, there was nothing in the toilet. I was positively terrified.
Quote:
Originally Posted by solarpower View Post
Get a good tummy tuck with engine skid and treat it like a pimp does a crack whore.
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post #9 of 19 Old 06-17-2013, 10:03 AM
Indy
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Capaciter wont fix whine, thats your grounds. Have a multimeter? If you have 12v at the amp, 12v on the remote wire, 0phms on your ground, verified by meter fuses and the amp wont power up, your amp is dead. If you dont have a meter, go buy one. Theyre cheap and you should have one anyway.

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post #10 of 19 Old 06-17-2013, 01:20 PM Thread Starter
PurpleTJ
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Quote:
Originally Posted by Indy View Post
Capaciter wont fix whine, thats your grounds
.
The capacitor fixed my whine.

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Originally Posted by Indy View Post
Have a multimeter? If you have 12v at the amp, 12v on the remote wire, 0phms on your ground, verified by meter fuses and the amp wont power up, your amp is dead. If you dont have a meter, go buy one. Theyre cheap and you should have one anyway.
No, but I'll buy one and try this. I was kind of avoiding doing this to avoid the truth that my amp is actually dead

Quote:
Originally Posted by TheDustMan View Post
I took a poo once, and when I stood up, there was nothing in the toilet. I was positively terrified.
Quote:
Originally Posted by solarpower View Post
Get a good tummy tuck with engine skid and treat it like a pimp does a crack whore.
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post #11 of 19 Old 07-04-2013, 12:56 PM Thread Starter
PurpleTJ
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Okay, so possibly some good news? I have 12v at the amp power, but the remote wire barely wiggles the needle. Yet, the amp didn't turn on when I jumped the wire. Could this still mean its a problem with my head unit?

Quote:
Originally Posted by TheDustMan View Post
I took a poo once, and when I stood up, there was nothing in the toilet. I was positively terrified.
Quote:
Originally Posted by solarpower View Post
Get a good tummy tuck with engine skid and treat it like a pimp does a crack whore.
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post #12 of 19 Old 07-04-2013, 01:46 PM Thread Starter
PurpleTJ
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Scratch that. I pulled the dash apart, and the wires came apart where I spliced the remote into the head unit. I reconnected the wires, and now have 12v on the remote wire at the amp. Amp is still not turning on. Soooo dead amp?

Quote:
Originally Posted by TheDustMan View Post
I took a poo once, and when I stood up, there was nothing in the toilet. I was positively terrified.
Quote:
Originally Posted by solarpower View Post
Get a good tummy tuck with engine skid and treat it like a pimp does a crack whore.
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post #13 of 19 Old 07-05-2013, 05:28 PM
thantos858
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Quote:
Originally Posted by PurpleTJ View Post
Scratch that. I pulled the dash apart, and the wires came apart where I spliced the remote into the head unit. I reconnected the wires, and now have 12v on the remote wire at the amp. Amp is still not turning on. Soooo dead amp?
Check all the fuses and grounds first. A loose ground or blown fuse on the amp itself can cause the amp not to work. Also make sure the wires to the speakers are connected and that your settings on the head and amp are correct. Amazing how many times I have had a buddy tell me a amp is dead when its a simple setting.
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post #14 of 19 Old 07-05-2013, 06:32 PM Thread Starter
PurpleTJ
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Quote:
Originally Posted by thantos858 View Post
Check all the fuses and grounds first. A loose ground or blown fuse on the amp itself can cause the amp not to work. Also make sure the wires to the speakers are connected and that your settings on the head and amp are correct. Amazing how many times I have had a buddy tell me a amp is dead when its a simple setting.
All fuses are good, all grounds are good. I've checked and re checked them all. I wish it were just settings in my head unit. It was working for months, then all of a sudden stopped. I never changed any settings.

Quote:
Originally Posted by TheDustMan View Post
I took a poo once, and when I stood up, there was nothing in the toilet. I was positively terrified.
Quote:
Originally Posted by solarpower View Post
Get a good tummy tuck with engine skid and treat it like a pimp does a crack whore.
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post #15 of 19 Old 07-05-2013, 10:35 PM
Indy
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If at the amp you have power, grounf and power on the remote and good fuses in the amp but nothing past, your amp is dead.

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