Hello all! New here. My Bose Av28 system just recently stoppped playing sound. I really just use it to power my speakers because with the bose connections they cannot hook to anything else. I do always just switch my digital sound jack from my Blu Ray to my Cable box depending on what I'm watching. Anyway, the sound has just quit me. Ive tried unplugging, making sure it wasnt muted,and switched the wires dozens of times to get the sound back. I'm reading that many peaople have this problem. Should I just purchase a new brain? And if I wanted to could I purchase a Bose Blu Ray brain with the same speaker jacks? Thanks for any help.