Looking for insight on trouble shooting a Marshall 6101 Well I've had this baby for years and somewhere in it's life I'm sure it was dropped a few times. It has had an intermittent problem of loosing the treble pot on channel 1. Looooog story/short, I finally fixed it by re-soldering the spade connectors. However; now I have what seems to be a static issue. If I tap anywhere on the amp I get a scratchy static sound. It's everywhere, so where do I start? Please see see vid for more info. Your help is greatly appreciated.