power cycle hum

[petemoore]

  Is there a reason power down/power up would consistantly turn the hum up?
  Stupid reverb again.
  smakin' it around makes high hum go medium, but not low hum levels since this morning.
  Turning the power off after the smacking session [to reduce hum] restores hum to high levels again !
  Cycling power doesn't reduce hum, smacking around does.
  Yupp...I'd think loose wire, wiggling wires doesn't matter, every which way, I wiggled all of them many times.
  Play reverb at medium hum levels for however long...wiggle stuff around...no change till power down/power up turns the hum 'switch' to high level hum.
  Was strewn around and wired in an old amp chassis [on a piece of paper], now it's strapped to 1/2'' thick foam.
  That's what I used to get all the time when attempting to box a circuit...I probably never will have been able to figure this out...D!&n thing decided to hum real bad, daft !

[earthtonesaudio]

Here's what you do: 

-Print a wallet-size picture of Craig Anderton (or your guitar effects guru of choice)
-Tape it inside the amp enclosure so that Craig is looking at the circuit
-Reassemble the amp and bask in the glory of zero problems, hooray!

This is an adaptation of the theory that any malfunctioning device will work perfectly while under the observation of a trained professional, but stop working again as soon as you get it home.

If this doesn't work, try glossy photo paper.

Also works for car engines!

[petemoore]

-Print a wallet-size picture of Craig Anderton (or your guitar effects guru of choice)
-Tape it inside the amp enclosure so that Craig is looking at the circuit
-Reassemble the amp and bask in the glory of zero problems, hooray!
  Thanks for the support, I'll try that.
  And hope someday to be able to find out for sure if Craig had a problem circuit.
  This is an adaptation of the theory that any malfunctioning device will work perfectly while under the observation of a trained professional, but stop working again as soon as you get it home.
  Reverb gets jiggly, unfortunately I had already to do some debugging [of course after the many wires made the 15-20 board flips difficult, then I put the Mos-follower on it, put in box...perhaps I pull it, reset the length of all the wires and choose a better board placement...take a good look at the underside of the board [through the glass disc under brightness] while I'm in there.
  It seemed to settle down and sound great again, hopefully a more patient approach to boxing it will provide relaiable reverb.  Great sound..[!!!]..I'll get this tank into service, probably a wire got pulled a bit too hard 1 too many times...all for the best I hope, I should have cleaned it up during the installation.