Originally Posted by cytowing
Removed the knob, then I took the shaft nut off that holds it from the top. Pushed the pot down as far as it would go and used a syringe to squirt a couple of ml or so of alcohol in through the hole for the locking tab, aiming at the base of the shaft. Then turned the shaft a bunch of times and let it dry for a couple of hours before re assembling.
Looking at the pot, there really is no external access to the tracks and wiper. It's sealed up quite tight, but if you're pot is working fine again...who knows?
Mine has mysteriously become silent again, without any intervention on my part! I'm beginning to wonder if it's not a DC offset problem. Yaqin didn't include an input capacitor to prevent the entrance of DC into the amp...or maybe it's leaking back from a higher stage? ap1, is this a possibility?