Every turntable has one, some very simple, others very complex designs, but without one a turntable won’t even start. This 1990 (28 year old) Linn Lingo 1 power supply is suffering from speed issues at 45 rpm, normal for a power supply its age. Replacing aged parts with more modern ones, adjust voltages, and it will be back in business and as good as new.
Vic
