Amplifier destroyed, or...?

[oya]

Hello!

I finished testing my new stereo in my roadster. It worked perfect. I was going to finish the fitting, and had do disconnect the amplifier (Focal Solid 2) and cut the powercable (Battery +). After reconnecting, the fuse on the amp kicked in. I had done a bad connection. The cable from the battery (+) was in the ground on the amp, and ground from car into batteryinput on amp. I did a correction, but everytime I try to give it power, the fuse says goodbye. There has do be something wrong with the amp, or something wrong with the cables, or maybe something wrong with the spot i chose for ground (though it worked fine before the bad connection). The amp is in the forward trunk, and the ground is on the right side (where i found some other cables, but I was wondering if i should test the ground closer to the battery. Any hints?

[RichG]

Re: Amplifier destroyed, or...?

It sounds like you have blown the amp. There will be at least one component inside that is charred.

If you know what you are doing with electronics it may be possible to fix it yourself, otherwise you can try to get it repaired.

[10:45PM]

Re: Amplifier destroyed, or...?

If you know what you are doing with electronics it may be possible to fix it yourself, otherwise you can try to get it repaired.

no ****?

Depends whether the amp had reverse polarity diode protection on it's DC input. otherwise it could have caused a lot of damage also depending on how long the fuse held out originally.

Can you get the lid off the amp and maybe take a photo? it might just show up as obvious.

If you have a multimeter you can make basic checks with the DC cabling disconnected and tested at the dc input itself, your meter should be on resistance range , report back with the reading (which will probably be close to 0 ohms)

[RichG]

Re: Amplifier destroyed, or...?

no ****?

Depends whether the amp had reverse polarity diode protection on it's DC input. otherwise it could have caused a lot of damage also depending on how long the fuse held out originally.

:p

[Mark F]

Re: Amplifier destroyed, or...?

Quite a few bits in the amp require correct polarity (they blow if the current tries to flow the wrong way) so the amp will be toast, it will be possible to fix in theory, but you really will have to know exactly what your doing, and have perfected the use of a soldering iron to the point where you could solder up a computer motherboard (not remotely likely even if your superb)

If you try a repair and test it, make damn sure you discharge it before doing any more work on it, as there will be quite a few capacitors inside that store a charge even when its switched off, if you get a belt from some standard amp capacitors its goodbye...

[oya]

Re: Amplifier destroyed, or...?

I was quite lucky. I went to a place where they fix various electronic stuff. They told me it would probably cost about 150 £ (1500 Norwegian Kroner). He opened the amplifier and told me it looked like I had been lucky. He used a measureinstrument of some kind, cut something, did a measure again. That'll be 100 kroner (10 £). Ahh, everything is finished now, and the stereo is working perfect.

[10:45PM]

Re: Amplifier destroyed, or...?

He used a measureinstrument of some kind, cut something, did a measure again.

reverse polarity protect diode.

I do hope he's replaced it :redface:

it's there to protect the product from you doing precisely what you did.