stupid amp! - 1970 harmony h550 solid state hair puller repair Published 6 years ago • 54K plays • Length 54:15 Download video MP4 Download video MP3 Similar videos 40:16 trashed 1950s rickenbacker m8 guitar amp needs complete rewire...let's hot rod it! 43:35 epiphone valve junior mods - a total waste of time? 47:30 70s "deluxe bass amp" - who made it? is it worth repairing? 25:21 fender champion 30 solid state guitar amp repair & demo