Hi
 
	I have a Sandberg that's developed a fault.
 
	When I sweep the pickup pot it crackles, I thought this was just dirty contacts. But after I've swept to either pickup and let go the buzzing/ crackling can still be heard and is there when I play, almost like mild distortion. If I then just touch the top of the pickup knob 2 or 3 times I can get it to go away, like an earth fault but it crackles and is still there even when I touch the strings etc.
 
	 
 
	Any ideas?
 
	 
 
	It's 10 years old, do indeed to update the active circuitry? Big job?
 
	 
 
	Thanks