You can take the knob off, one tiny phillips screw, and dribble some Deoxit where the shaft meets the top case (some will work its way inside). Then set knob on and rotate lock-to-lock 3-4 times and repeat. Give the Deoxit time to dry out and see if that fixed it.
They are a odd pot and difficult to desolder, even if you can locate a spare. Jeff Birt From: M100 <[email protected]> On Behalf Of Jason White Sent: Sunday, May 16, 2021 8:24 PM To: [email protected] Subject: SPAM-LOW: [M100] Model 100 Screen Fading to Black My Model 100 keeps giving me fits. The latest issue is that after a few minutes the screen will start getting darker and darker until it is completely black. It will flicker to the correct brightness if you wiggle the knob a bit, but it doesn’t stay, which I am guessing means it’s either dirty or just wore out. To date (before this problem started, but it had others...) I cleaned the board with alcohol and glycerin (thanks hey Birt!), replaced the nicad battery, removed said battery, removed rex rom, removed and reseated nonsoldered ram module, recapped logicboard, and walked away from it for a few weeks. If anyone has any suggestions, I’d love to hear them. J White P.S. I normally post on the Discord channel, but I haven’t gotten a message from the list in a while, so this is also a test to see if I am still on the list. :) Sent from Yahoo Mail for iPhone <https://overview.mail.yahoo.com/?.src=iOS>
