> 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
