I’ve removed the pot, but it’s really tiny (surprising for the age of the machine), and not something that looks like it would survive disassembling.
I’ve put a 50k trimpot in it’s place to confirm that the fix works (it does). I’m still looking for something that will take the original thumbwheel for a permanent fix though. Ian > On Aug 12, 2017, at 6:47 AM, Scott Lawrence <[email protected]> wrote: > > 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 >> > > > --- > Filter service subscribers can train this email as spam or not-spam here: > http://my.email-as.net/spamham/cgi-bin/learn.pl?messageid=CA865FC87F6411E7B9009C3793ED0201 > > <http://my.email-as.net/spamham/cgi-bin/learn.pl?messageid=CA865FC87F6411E7B9009C3793ED0201>
