turned amp on this afternoon, and it made a sound like i was plugging in the instrument cable with the amp on, then i guess i would call it a little "pop". out put level is very very weak. if i turn the compression up at all i pretty much loose all out put, and the thresh light comes on.....i am no tech head at all. anyone know what this could be? i have a authorized ampeg tech to take it to, but wont be able to get it looked at for a couple days at least in Wisconsin we are supposed to be in for a Snowmageddon the next couple days...i am bummin'! any input would be cool..