Amp and Protection Mode?

[bmbrown911]

The other day when I was driving home I was listening to my radio and all of a sudden the sound went completely quiet. I didn't think much of it, thought maybe I had just lost the signal. So I just turned off the stereo completely. The next day as I was leaving my house I went to turn on the stereo and I wasn't getting any sound on anything, auxillary, CD player and tuner were all a no go for sound. So after checking some things I noticed the fuse on my power cable near the battery was fried. So I replaced it and it popped again within 5 seconds. Put another one in and the same thing. By now I knew something was wrong just not sure what. I got to tinkering with the amps. I unplugged the remote wire from the sub amp and the 4 channel and used a jumper wire from the amps power to remote to see what was going on and noticed that it was my sub amp that was the culprit. Every time it was powering on it went into protection mode. The 4 channel amp is working just fine by itself. This is what I don't understand though. The night I was driving home when the stereo quit working first was the day I had unhooked my subwoofers and moved them out of my car for some more space. So there were no subwoofers at all that the amp was pushing. So my question is what could be going on? Is my amp fried and if it is how can that be without subwoofers hooked to it even? Especially considering that I have had my system installed in this same configuration now for 6 months without one hint of a problem. Anyone else have a problem like this or heard of it before. Any ideas or wisdom would be much appreciated.

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[azimuth 5,000+ posts]

did you leave behind the speaker wire when you removed the subs? or unhook the speaker wire from the amp? check all wiring. power, ground, remote, speaker.

 

[bmbrown911]

I left them hooked up but made sure they were not touching in any way.

 

[azimuth 5,000+ posts]

I left them hooked up but made sure they were not touching in any way.

unhook the speaker wire from the amp and see if it still goes in to protect. the fuse blowing on the power wire suggests it may be frayed/touching metal somewhere.

 

[bmbrown911]

speaker wires are already unhooked. Still blowing fuses.

 

[john3387 10+ year member]

did you check the ground, you really should never blow fuses. its got to be the wiring

 

[bmbrown911]

From everything else I've read I think this thing is fried. The 4 channel amp works just fine and there using the same wiring off a distribution block. I think it bit the dust somehow. Don't know how though. The wiring has been the same for 6 months. Nothing has changed other then my subwoofers were taken out. Already checked the ground. It works just fine for my 4 channel.

 

[john3387 10+ year member]

i dont know what else it could be, that used to happen to me until i looked where the ground was connected to and it was a bad and unstable place. i put it in a better place and never blew a fuse again. very strange that all the wiring is good but still blowing fuses

 

[bmbrown911]

Yea it is pretty strange. Everyone else I talk to seems to think that there is something wrong with the amp. Don't know how that could of happened but I called a local pro install shop and there going to take a look at it and let me know whats going on. I guess in the mean time I will just have to live with amped speakers. Better then nothing. Thanks for all your suggestions though. Cheers!

 

[john3387 10+ year member]

have you been messing with it, like changing the gain or anything. also you did put the right type of fuse in right. also is this for the fuse from the battery going to the amp or the fuses on the amp itself? sorry if you said it early but didnt see it

 

[bmbrown911]

No I wasn't tinkering with anything. All I did was unhook the speaker wires from my subwoofer box and then those wires from the amp. I don't mess with the gain on my amps. I set them to a good level and then I forget about them. The fuse that keeps popping is on my battery and yes the fuse is in correctly and is the correct size. The fuses in the amp are completely fine.