Have you considered removing the knob and removing it from the board, and rebuilding the pot? Clean it all with contact cleaner/tv tuner cleaner, reassemble it.
I did this for some radio push buttons (the super long ones that turn on and off like 8 circuits) inside an old graphical equalizer and the thing is like new now. S Sent from your iPhone. > On Aug 12, 2017, at 1:14 AM, Ian McLaughlin <[email protected]> wrote: > > Hello all, > > Does anyone have a suggestion for a replacement contrast potentiometer for a > model 100? I have a machine that was working until someone ‘over-adjusted’ > the contrast knob and it now spins freely, and therefore doesn’t work. It’s > not a mechanical issue with the screw and the knob, but rather inside the > mechanism itself. > > I tried a quick scan of Digikey but I can’t find anything with remotely the > same form factor. Wondering if anyone knows of a source for these, or has > managed a repair with a substitute? > > Thanks for any guidance. > > Ian >
