i accidently while moving my sub box around, had the battery and ground wire touch. saw some sparks, i think. dont really remember b/c it happened abput 3 weeks ago. anyways, does anyone know what the problem might be? i really dont want to buy a new amp. its a rockford 500s. thanks

 

Have you checked the fuses on the amp and at the battery?

 

^^^ Stupidest question ever... Of course he checked the fuse(s), and of course they're good. Otherwise, he wouldn't have made this thread... Sheesh...

/sarcasm.

 

the amp doesnt have a fuse. i went to a car adio store and they said it doesnt havnt any internal fueses in the amp. and yes the battery fuse was fine.

 

Did it just "look" okay? Or did you verify continuity with a meter?

 

If the fuse is indeed working, does the amp power up? Any lights? AGU fuses have a problem of losing contact so although it might look fine, there is no continuity. Check with meter to see if youre getting power to your trunk.

 

It doesn't have fuses ON the side of the amp at all??

 

some amps don't have a fuse on the outside of the amp itself, the circuitry has a series of over/undervoltage relays and CTs which protect the more expensive circuitry..

Check the fuse continuity, both in and outside of the fuse holder. if you have a DVM just measure the voltage coming into the amp, also check to make sure the ground wire didn't come disconnected from wherever you have it bolted to

 

"some amps don't have a fuse on the outside of the amp itself, the circuitry has a series of over/undervoltage relays and CTs which protect the more expensive circuitry".
__________________________________________________ _________________

Not bashing you bro, but that's got to be the stupidest thing I've heard of....with no external fuse on the amp. itself!! Seeing that the majority of people hooking up these amps are novices....one slight touch of a hot lead hitting bare metal, it could fry the board.

A short is going to follow the path of least resistance, closest to the amp. not to the battery or in line fuse.

Check your grounds....And pray that you haven't fried the circuit board.
If it smells like burnt plastic.....Good luck.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by shadow29485 &raquo;</TD></TR><TR><TD CLASS="quote">Not bashing you bro, but that's got to be the stupidest thing I've heard of....with no external fuse on the amp. itself!! Seeing that the majority of people hooking up these amps are novices....one slight touch of a hot lead hitting bare metal, it could fry the board.</TD></TR></TABLE>

Stupidest thing?? Neither of my US Amps units have on-board fuses...

 

Yes, that is stupid......Like I said, most of the amps are hooked up by novices....your every day average monkey bumpers, that have know idea what there doing, they just want the boom boom, and have no real knowledge of electronics what so ever.

The company that made the product should keep this in mind. But they don't....

Some of them do, that's why they put the little seal/sticker on the bottom of the casing sometimes...."If this seal is broken, it will not be covered under warranty". Unless installed by a licensed dealer. Economics my friend.

Every amp that I've ever owned has always had an external fuse, it protects the circuitry (mother board) from faulty mishaps.

If not having a fuse externally on your amp.....I would highly suggest to put an inline fuse at least 4 to 6 inches max. coming from your amp. on output toward the battery.

I've been in the audio/security circle with the same company, for about 12 years now, and I've seen a lot of b.s....This happens to be one of them.

Preventative maintenance.

I don't want to offend anyone, this is just my judgment and what I've seen....reflects it.....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by shadow29485 &raquo;</TD></TR><TR><TD CLASS="quote">
Every amp that I've ever owned has always had an external fuse, it protects the circuitry (mother board) from faulty mishaps.
</TD></TR></TABLE>

There are a slew of products which don't use fuses not only amps but other circuitry. Just because an amp doesn't have an "external fuse" does not mean it is not protected from "faulty mishaps"(whatever that means).

I'm sure if you got your hands on a schematic of a JL slash amplifier (no external fuse) you would see that the circuitry has other means of protecting the other more expensive components such as the FETs and power supply.

Think about how a GFCI works, does that have a fuse? NO, it measures leakage current from hot to ground and any change of ~5mA it cuts the power off. There is more than one way to skin a cat, using a fuse to protect a circuit is just one way.


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by shadow29485 &raquo;</TD></TR><TR><TD CLASS="quote">


Not bashing you bro, but that's got to be the stupidest thing I've heard of....with no external fuse on the amp. itself!! Seeing that the majority of people hooking up these amps are novices....one slight touch of a hot lead hitting bare metal, it could fry the board.</TD></TR></TABLE>

So before you go ranting about the stupidest things you've heard, you might want to do a little more research.


ANYWAY!, OP did you get your problem resolved, any update on what you have discovered?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slowSOHCvtec &raquo;</TD></TR><TR><TD CLASS="quote">Think about how a GFCI works, does that have a fuse? NO, it measures leakage current from hot to ground and any change of ~5mA it cuts the power off. There is more than one way to skin a cat, using a fuse to protect a circuit is just one way. </TD></TR></TABLE>

Bingo!

 

"OP"...Nice.

Great feedback.

You know your stuff.....That's what I wanted to hear.

I've been on the same audio forum for about, almost 2 years now, and I'm sick of hearing the same crap. It's about time, someone can help another person out, without taking the comfort to tell someone something that they know nothing about.

Seriously....

Take care,

-Shadow-

P.S. As for my problem.....I'm still searching