01-06-2013, 11:27 AM
This happens often on old 30s switches. Sometimes the spring inside has gotten weak, but, more often the contact has worn out. Twisting bending and spraying sometimes fixes it (for the next few years) sometimes till the cleaner solvent drys out.
WD 40 is fine for the switch. I would not get it inside the vol control on a Philco of that vintage - or any radio that uses a coated resistor - only use the "green" Deoxit. I don't rember the #, but it says safe for plastics.
WD 40 is fine for the switch. I would not get it inside the vol control on a Philco of that vintage - or any radio that uses a coated resistor - only use the "green" Deoxit. I don't rember the #, but it says safe for plastics.
