So I got a KF-50....and it's blowing the 3/4a fuses

Discussion in 'Amps/Cabs Tech Corner: Amplifier, Cab & Speakers' started by tradarama, Feb 16, 2008.

  1. tradarama

    tradarama www.PRIMEGUITARS.com Silver Supporting Member

    Messages:
    1,181
    Joined:
    May 12, 2002
    What does that mean?

    I have some mismatched old Mullard XF2s in it 4ma apart. I tried setting the bias to 30ma. Anyone help?

    Thanks! Jim
     
  2. ROKY

    ROKY Member

    Messages:
    7,024
    Joined:
    Mar 2, 2004
    Maybe PM Hogy about this if he doesn't see this question .
     
  3. murkat

    murkat I like sea otters Silver Supporting Member

    Messages:
    1,366
    Joined:
    May 30, 2005
    Location:
    NTlGuitar.com, Nashville, Tn.
    call or email komet, Hogy or Mike. very heplful with there own stuff.
     
  4. Blue Strat

    Blue Strat Member

    Messages:
    30,033
    Joined:
    Aug 2, 2002
    Location:
    Sterling, VA (not far from Washington DC)
    Blowing the HT (high voltage) fuse often means that one of your power tubes is shorted. Try pulling the power tubes and try again. If the fuse holds, set the bias pot to the lowest setting and try one tube at a time. The tube that causes the fuse to blow has a problem.
     
  5. tradarama

    tradarama www.PRIMEGUITARS.com Silver Supporting Member

    Messages:
    1,181
    Joined:
    May 12, 2002
    He is always there for me. I need to put him in my will.....

    Power tubes will blow the 3/4a....it's them...problem solved.

    Thanks to everyone who helped me!

    Jim
     

Share This Page