I just uncased my Onyx 1620 today, and noticed that the main meters had both of the -30 LEDs lit continuously. When I solo a channel, the right -30 LED stays lit, while the left one goes out. A solid whack to the side does nothing to help (big surprise there). I tried this while plugging into a known good outlet, no inputs into the board, all knobs zeroed out, and all faders down. No outputs connected either. Does anyone have any ideas of where the problem might lie? Board is around four years old, lived in a case and my room for most of it's life, and has had a pretty easy one at that. My first thought was ribbon cables. It's not a huge deal, but I thought that figuring this out would help in my repair skills later down the road. Oh yes, please refrain from replying if you simply are going to say "It's broke 'cause it's Mackie." I don't need to hear that. Thanks in advance guys.