I'm having trouble with getting any signal from the outputs of the amp. It's a Pioneer GM-X84 (4x35w). I couldn't find a wiring diagram/user manual but found the pins were marked on the circuit board. I wired it up using only channel A to power the front two speakers. It has a 12 pin Molex type plug and two rca inputs, one for each channel. It powers up fine, the light comes on and using a test light I found various components in the circuitry are receiving power but nothing comes out of the speakers. I checked the board for dry solder or blow caps but everything looks ok. Does anyone have any suggestions as to what the problem might be? Thanks in advance.
http://i.imgur.com/9EOemXU.jpg
http://i.imgur.com/wwc8NFj.jpg
http://i.imgur.com/XHiIDh3.jpg