21-09-2017, 09:02 AM
(This post was last modified: 21-09-2017, 09:04 AM by Geordie McBoyne.)
It's possible the hum present at max volume control settings is caused by the fact the mains neutral connection is returned to the chassis via the earthy end of the volume control.
Link to the Vintage-Radio forum. Post No.4 explains a similar hum problem experienced while servicing this amplifier:
https://www.vintage-radio.net/forum/show...p?t=138576&highlight=AC-DC+mains+amplifier
Geordie McBoyne.
Link to the Vintage-Radio forum. Post No.4 explains a similar hum problem experienced while servicing this amplifier:
https://www.vintage-radio.net/forum/show...p?t=138576&highlight=AC-DC+mains+amplifier
Geordie McBoyne.
