[sdiy] tube phono (a little OT)

[Scott Gravenhorst]

I you have not replaced the caps in the power supply
with new ones, I would do that.  If they are as old
as the phonograph, they could be aged to death.  This
would be an easy source of hum.

"Gavin Russom" <elmystico at earthlink.net> wrote:
>A friend and I are trying to repair an old tube phonograph with a built in
>speaker.  It hums loud!  Sounds to me like a grounding problem... The hum
>doesn't change volume when you turn the volume pot.  I do ok with analog
>synth DIY and troubleshooting, repairs as well.  Any suggestions? Am I in
>over my head with this one?


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