The other day I say a few light sparks emerge from the top of my LM 800's switch as I turned it on. Now there is no sound coming from it; but, If I play while flipping the switch off and the amp is powering down, a bit of sound comes out . Thi makes me think there is nothing wrong with the output section, but rather that it's just not getting power via the switch, because the switch might have fried. Before I open it up, do you think there might be something amiss in the switch? Thanks! PS: also, tell what to NOT touch inside there. I learned that the heard way fooling with a Genz Streamliner!