My Amp Blown??

[FreakyOCR]

It blows a fuse everytime you put one in. I put a breaker in and it was tripping the breaker at lightning speed.....

Now It blew a few fuses here and there (4 in one day)

I had the two subs on doubled up on one channel.... It was working for about a week. Then it happened. I put a fuse in and it blew. I went and bought a 10 fuse box and it blew them all. (I replaced it with the car and deck off.... turned her on and pffttt there goes the fuse..... The breaker just kept tripping over and over and over at probably 20 times a second.

Now, How would the amp just die like that?? The subs are fine.... isn't the fuse supposed to prevent it from blowing??? Maybe I overloaded it with the two subs doubles up, I don't know.....


Help!

[bigblue77]

Sounds more like a dead short to me rather than a blown amp. But you never know, my have pushed it to far and melted something.

Jer

[FreakyOCR]

Hmm what could be shorting?

(What is a "dead" short??

[bigblue77]

I use the term "dead short" to describe a serious short to ground. Usually the system is dead beyond that point, Thats why I call it a dead short.

Check everything around the Power Supply, especialy the bottom side of the board for bad solder joints. Also look for the sealer to be messed up someplace, allowing runners to touch. On top just look for something that got to hot. Brown, burnt, boiled, etc.

To me, an amp isn't blown until its a final driver or something.

Jer

[Kuasimodem]

Which fuse are you blowing? Is it the one that plugs into the amplifier, or the one at the power source?

If it's the one in the amp, it's time to take it to a repair shop, becasue most likely one of the final stage amplifier transistors shorted.

If it's the one at the power source (battery, fuse block, etc), then check all along the power wire for a place where it may have shorted to the chassis of the car. Especially check pinch points, like where the wire passes thru metal body panels. If you find no spots where the power wire is pinched or shorting to ground, take the amp to a shop to be checked out (see above paragraph).

[FreakyOCR]

The fuse in the AMP did blow..... and now it keeps blowing the inline.... theya re all 20A

[bigblue77]

Sounds like its time to send it in then. Unless you have the schematic for it, and the values sheet. Kinda hard to diagnose if you don't know what kinda juice is supposed to be where. Or you could just geta new one, most shops won't touch amps anymore, and if they do there is little or no warrenty. Good luck

jer

EDIT: Could just be the shops around here. Thats why I usually fix my own. Not the Rockford Fosgate tho.

I had the two subs on doubled up on one channel....

Wired in parellel or series? 2 4 ohm speakers right? I bet the amp saw the load as 2 ohms and you fried it. Read the specs on the amp to see what kind of load it can handle before putting it back in or else it will just die again.

[FreakyOCR]

It's funny becuase the guy who sold it to me did that because he couldn't get both of them working at the same time otherwise.... maybe the amp was screwed when I started.... Never paid a dime for it yet..... luckily....

What amp? Just the two speakers? IS it a two channel amp and he is just useing one channel to push both speakers because he could not get the other channel to work?