It's over : ( The story began when I bought the GK 800rb off craigslist. Later to find out it was my fathers friends son. Took it home, used if for a few months (maybe a year). Then the smell of smoke which led to the heads demise. My father took it to someone he know's with an electric shop and they had fixed it. knew it worked now, but put it under the bed and hadnt used it for awhile. Now yesterday at a tryout, the thing must have overheated maybe the second song in. It just stopped dead in its tracks but the light was still on.(goodthing i had my backup head) Plugged in the GK today and all it done is make a constant humming noise. Any clue on what this is? Though Its not my priority anymore cause Im sick of it.