Lets just make sure were on the same page, do you know for a fact that the amp is on? Does the light on the amp light up? Try plugging an ipod into the amp for the signal, if that works then your LOC isn't working. You can hook your ipod to the amp by using a 3.5mm jack to rca cable. Lets make sure your amp is actually turning on, getting a signal, and producing power before you start accusing someone.