[quote name='BassManKev' post='256102' date='Aug 6 2008, 11:29 AM']ye done that
i assume since a sound is coming out, and no sound come out if i take the batteries out, the preamp is working fine, its just the tone knob isnt working, reckon its worn out??[/quote]
Removing the battery would break the circuit. It proves the circuit is intact, but the preamp may still be at fault. Might be worth putting a multimeter across the tone control terminals and checking to see if the resistance changes when you turn the knob. I have no idea what that will tell you, mind, but wielding a multimeter, with a cup of tea on standby, is a good manly activity and should be encouraged!