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My friend's dad blew the Amp on his Jamo SW410e subwoofer. Whenever you turn it on weather or not it has input, it just hums. I'm hoping to repair it as I haven't scraped together the cash to give my 7.0 system that +0.1 that it sorely needs. I've taken it apart and have started to test the Caps on a hunch. Does anyone know of a common issue, or where I should start? I can't seem to find anything about this specific model on the net, and I doubt it would be worth it to order a new amp, if that's even possible. Im attaching pics of the amp, I looked it over and can't see anything that jumps out at me. The caps look good, there's no visable scorching, no loose solder joints, and the switches/dials work. Any and all pointers are greatly appreciated.








Thanks,


Tyler
 

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I'm not a pro but, i have experiance with car audio.

have you tested the sub w/out the source hooked to the amp?

and run a power cycle
 
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