i would like to fix it myself if i can. Stopped working yesterday, today i looked and the power wire was OUT of its socket thing, god knows how...and when i tried plugging it back in i got NO lights. I did a voltmeter check i got 12 on power and 11.7 on ground so it was not my fuses, therefore i have determined the amp is blown. I do not see any damage inside the amplifier when i took the back off. anyone know how i can find the problem inside the amp? Its a Mosfet sf400 just a cheap amp i got with what money i had at the time to go with my 2 12" kenwoods. If not its fine its only a 60$ amp totally replaceable.