Ampeg PF-50t Schematics

Discussion in 'Amps and Cabs [BG]' started by valloti, Oct 10, 2021.

  1. valloti


    Mar 6, 2010
    Berlin, Germany
    Hey dear community!
    Just wondering if any of you would have the schematics of that beautiful head? Mine’s doing the intermittent red/blue light and doesn’t wanna work. My amp tech’s having troubles finding the problem.
    Any help would he highly appreciated!
    Cheers and have a great week!i
  2. valloti


    Mar 6, 2010
    Berlin, Germany
  3. beans-on-toast


    Aug 7, 2008
    That’s the owner’s manual, not the schematics. The PF-50T schematic is only available to authorized service centers.

    Problems that I‘ve seen with the bias circuit are often related to issues with solder joints or a bad potentiometer. Stress on the shaft can break the pot’s solder joints. Resoldering often resolves the problem.
    Jim C and grouse789 like this.
  4. Send an email to Ampeg requesting the schematics with the serial number. After you promise to not give the schematics to anyone they have been known to send them.