Yeahhhh...don't worry about that...I'll take care of it.
The guys are correct...ALWAYS turn off the amp before touching cables...as for the static, can be one of several culprits, but usually it's either a cap going bad or something caused the offset to go haywire.....best case scenario is just a quick adjustment...worst case it's either replacing a cap or two or switching out a pre-driver transistor. Not a biggie...............