02-03-2014, 05:35 PM
Cleaning it (might have to open unless it has that hole in the case) and Deoxit might do the trick.
When the wiper is in an extreme position it should have a low (below 100 Ohm) resistance to the respective end terminal.
When the wiper is in an extreme position it should have a low (below 100 Ohm) resistance to the respective end terminal.