I just bought a Matrix 6 off of eBay which appeared to be in good enough shape. However, when I brought it home to test it out, no sound came out. It powered up and all, scrolls through the mayriad of menus and options, but nothing in the way of music.

I called the guy I got it from and asked if he knew how to fix this and he suggested recalibration: nothing. He suggested turning off local control: nothing. He sent an email with a page that had another idea, holding down store while powering up. That allowed me to play the 00 patch but went back to soundless once I changed patches. This is a ridiculous problem, if anyone can help I'd appreciate it. I haven't gotten to do anything with it since I got it!