Re: Phono3S it's humming again.
Hi Andy,
Placing a die cast case around the Gyro PSU will not help as it is an electromagnetic field the is causing the problem. Only mumetal or distance will help and that is a seriously expensive exercise.
Why not do as I did (cos I am lazy and cannot be bothered to change over the belt) and build yourself a new PSU with a toroidal transformer and switched voltages to change speeds, assuming that you have the DC motor, as opposed to the DC Papst motor. It is not very difficult using a standard 3 pin regulator. Of course if ll you play is 33 rpm is is even easier.
John
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