Ad Widget

Collapse

Announcement

Collapse
No announcement yet.

ll I want for Christmas is no more hum!

Collapse
X
Collapse
 
  • Page of 2
  • Filter
  • Time
  • Show
Clear All
new posts
Previous 1 2 template Next
  • #16
    Replace the main smoothing capacitors if 120HZ hum.
    Click image for larger version Name: Screenshot 2021-12-26 at 12.55.16.png Views: 0 Size: 163.4 KB ID: 948062
    Don't forget to remove the death cap and fit a three core earthed mains lead, if it hasn't been done before.
    Support for Fender, Laney, Marshall, Mesa, VOX and many more. https://jonsnell.co.uk
    If you can't fix it, I probably can.

    Comment

    • #17
      Are you able to tell if it's 60Hz or 120Hz hum?
      Can you post some pictures of the V3 & V4 area as well as the circuit board?

      Also, in post #2 you said with the .1 coupling cap disconnected, the hum was still there. Now the hum goes away when you disconnect that cap?
      Originally posted by Enzo
      I have a sign in my shop that says, "Never think up reasons not to check something."


      ​

      Comment

      • #18
        so...

        Click image for larger version Name: wal1.png Views: 107 Size: 57.4 KB ID: 948114
        "Take two placebos, works twice as well." Enzo

        "Now get off my lawn with your silicooties and boom-chucka speakers and computers masquerading as amplifiers" Justin Thomas

        "If you're not interested in opinions and the experience of others, why even start a thread?
        You can't just expect consent." Helmholtz
        • Likes 1

        Comment

        • #19
          Finally fixed! It was a bad rectifier. Thanks Jon, Chuck, and everyone for your help.
          • Likes 2

          Comment

          Previous 1 2 template Next
          Working...
          X