A better solution to switch arcing is a RC suppression, or snubber, network. This employs a resistor and capacitor in series, and is more effective at dealing with inductive arcing which occurs during switch activation....
One of the problems most vintage turntables face, and the Lenco is no exception, are platters which ring badly. The rubber platter mat found on most turntables controls this ringing to some extent, but there are better solutions now available....