| Check all resistors as well. Each must be unsoldered in order to be tested accurately. A resistor or two may have drifted or may have opened up somewhat, causing static sounds. A condenser is more likely the problem, but resistors fail, too. Also check volume and tone controls as well as the selector switch. Spray the selector switch with tuner/contact cleaner. If you are good with disassembly, disassemble the potentiometers (volume and tone controls). Wipe the carbon elements with a very thin film of di-electric grease, found at your automotive parts supply shop. If you noticed no improvement in audio when the controls were moved around when you first tested the set, save this until after all other faulty components have been replaced and the radio has been tested again. The volume controls and tone controls may be at fault, but disassembly is a big job and is not necessary unless they have been found to be at fault. Thomas |
Bill 
Doug Criner 