[Jukebox-list] Seeburg 100C Hum

[David Breneman]

--- Edward Hink <hink4 at cox.net> wrote:

> My 100C starts humming after playing a few 45s.  It seems that the
> only way
> to stop the hum is to remove the 6SL7 tube (the one on the left as
> you look
> from the rear) while playing and reseat it. This works everytime,
> only to
> have the hum return the next time I turn it on again.  I can touch
> the tube
> and it hums while playing.

Are you saying that if you remove and replace the tube the humming
stops until the next time you cycle power, or it stops until the
tube gets good and hot again?  If it's the second, the tube is 
probably getting gassy and the heat exacerbates that.  If it's
the first I have no idea -- could be a capacitor going bad that
gets "shocked" back into good performance by the power jolt of
removing and replacing the tube.  Does the hum go away if you
cycle power quickly on the amp?




David Breneman         david_breneman at yahoo.com


 
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