pyramid power supply

Discussion in 'The Projects Forum' started by jvnj67, Jul 11, 2011.

  1. jvnj67

    Thread Starter New Member

    Jul 10, 2011
    Hello everyone this is my first post here and I heard this is the place to get the most knowledgable advice on all things electronics so here I go.
    I have had a pyramid power supply model no. PS-26KX for over 2 years now and its primary use was to bench test 12V car audio and electronics. All of a sudden as I am testing an amplifier speaker combo the power supply shuts off and blows the 6amp 250v fuse. I replace the fuse and when I switch on again walla! blows the fuse again. where should I start troubleshooting?
  2. gerty

    AAC Fanatic!

    Aug 30, 2007
  3. #12


    Nov 30, 2010
    Start by disconnecting the amplifier. Then try a new fuse. If that doesn't work, try to get a schematic of the power supply so we can see how it's made.