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☖ Forums → Discussion Forum → Any electronic gadgetry wizards here?
Any electronic gadgetry wizards here?
2005-09-25, 8:56 PM #1
A friend of mine gave me a non-functional 2ch Alpine - he hadn't messed with it much..so I thought I'd give it a shot. The capacitors all look okay..I pulled the circuit board off the case/heatsink, and found this:

[http://img269.imageshack.us/img269/403/amp78vz.jpg]

[http://img269.imageshack.us/img269/7712/amp62wv.jpg]

Sorry for the lack of clarity - my camera doesn't seem to like close-up shots.

Think I can solder it back together - just drip a little on the traces? I pulled them up a bit for the pictures..they almost touch if I lay them down.
woot!
2005-09-26, 8:26 AM #2
Worth a try, won't fix whatever caused it to do that in the first place though.
gbk is 50 probably

MB IS FAT
2005-09-26, 10:30 AM #3
Originally posted by NoESC:
Worth a try, won't fix whatever caused it to do that in the first place though.



Quote:
Originally posted by Mark R on Anandtech

You might be in luck.

The bad traces are both supply ground potential to the speaker outputs. I'm not quite sure what could have caused them to blow like that other than connecting the amp wrong (connecting 12V to the a the speaker output ground).

If that is the case, the chances are that it hasn't done terribly much damage apart from burning out the traces. If you can put a nice solder bridge across the gaps, you never know, it might work.



Maybe I'll get lucky, maybe I won't :)

I soldered it, though:
[http://img303.imageshack.us/img303/4384/solderedamp3lx.jpg]
woot!

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