Hi. I cleaned them with ultrasound, measured them after cleaning, not before. I am waiting for some components to arrive to finish the repair and to be able to test the equipment. If they are wrong, the problem will surely appear, (or not), if it appears, "I will have fun" punching rivets.![]()
Well, your idea of cleaning the tone control potentiometer with an ultrasonic cleaner did the damage that you are describing. The last location where the potentiometer’s wiper was set in this case the middle detent now has a void and permanently cleaned of the conductive carbon![]()
May I ask you why?...vaseline ... keep it away from phenolic board
Finally, it went on track as we say in this place in the world. Obviously, it is not a damage caused by washing with ultrasound, it is by design. There are no jumps, no strange noises, it works perfectly well. Every day you have something new.
Thank you for your support.