I had a set of curtis pots go bad on my s10 electric truck. The problem is they spend all of their life moving around just off idle so they wear. Probably the same thing for your pot.
On November 2, 2025 3:58:59 PM EST, Wayne S via cctalk <[email protected]> wrote: >I should also mention that if it’s a wirewound pot, the wire where the wiper >sits can get pitted and grooved. If you have a good magnifying glass and >patience, you can use just a little of the paint-on silver conductor stuff >that was used to fix car antennas that were embedded in windshields and fill >in the groove. It’s very exacting work though because you can easily get some >on more than one wire causing a short. > >Sent from my iPhone > >> On Nov 2, 2025, at 11:54, Wayne S <[email protected]> wrote: >> >> Try cleaning it as Paul saysand se if that works. >> >> Carbon pots get a groove worn into them after time and the wiper ends up >> making intermittent contact. >> Usually you can take them apart and visually check. >> It’s possible that just the wiper is worn. >> Also possible the carbon element is cracked. >> It all cases it’s just easier to replace the control. >> >> Sent from my iPhone >> >>> On Nov 2, 2025, at 11:48, Paul Koning via cctalk <[email protected]> >>> wrote: >>> >>> >>> >>>>> On Nov 2, 2025, at 2:15 PM, Rob Jarratt via cctalk >>>>> <[email protected]> wrote: >>>> >>>> I have the contrast control on the monitor of my Olivetti M24 which has >>>> become unreliable, you only need to touch it and the display will disappear >>>> completely. It doesn't look too hard to replace the rotary potentiometer, >>>> but I was wondering if there is any way to "repair" it to keep the original >>>> part. It looks like this: >>>> https://1drv.ms/i/c/fc758a5a91b91301/ESPGlbvW5wxGpXPC5kXfzVMBTUUW96GThzDMqZ_ >>>> i8jq7tA?e=Ehmo1T >>> >>> I have a spray can of cleaner from Radio Shack that's designed to do this. >>> I used it a year or two ago to clean the pot on my toaster (the toast >>> darkness control). The can says it is "Tuner control cleaner & lubricant, >>> part number 64-4315. The ingredients list mentions >>> 1,1,1,2-tetrafluoroethane, cyclomethicone, and mineral oil. I suspect it's >>> considered non-PC nowadays, but I'm keeping it. >>> >>> It may be that turning the pot through its range a bunch of times will rub >>> off crud. >>> >>> paul >>>
