The Amp Garage

BillyZ got it right. Years ago I got an 80 watt iron from a stained-glass builder. Looks like a gorilla-size soldering pencil. Works where ordinary irons, even 100W plus "soldering guns" won't - including soldering to amp chassis. I don't use it often, but it's the bees knees when the job's beyond t...

Classic bias failure symptom. With output tubes removed, check bias voltage in the supply, on the adjustment pot, and on pin 5 of each output tube socket. Common problem on old Fenders & other fixed bias amps - bias filter cap packs up, output plates go red. I'm also a bit worried that the modificat...