good job man, glad he was able to find out what the issue is, what is it with pioneers having such issues and being such great HU too. That ***** u can't hot swap RCA's with that HU, i had done that so many times with my HU lolWith Pioneer you cannot plug and unplug rca's with the Hu on, you end up blowing a Pico fuse (located inside the hu). It will cause the issues you've described. You'll need to replace it (about 1.50) at radio shack or take it to a shop that usually charges about 50.00 to replace it. I would go have it checked to see if that's what needs to fix the issue. I learned the hard way also, but it's an easy fix.