Need help, snap crackle... silence

I have a JVC El Kameleon head unit running through RCAs to a Kicker KX 800.4 Amp to my Infinity interior speakers. The whole system worked great for about 2 months, then all of a sudden I heard a little distortion, some fading in and out, then nothing. The lights on the amp are coming on, but nothing is passing through. When I first turn on the radio, I hear static for about 2 seconds, then silence. I checked the ACV across the center and outside of the RCAs and nothing. What else can I do to verify that the problem lies within my head unit without doing a swap?

any other ideas?