[Coco] cleaning keys

[Bruce W. Calkins]

Given the delicate nature of the printed mylar circuit used in CoCo2 and 
3 keyboards, I would avoid acid or caustic chemistry.  Warm slightly 
soapy water followed with warm rinse water then flushing with denatured 
alcohol might work.  Do the alcohol flushing outdoors away from any 
sources of ignition.  Burning alcohol is almost invisible.
Bruce W.


On 11/26/2016 09:34 PM, Mike Delyea wrote:
> My coco 3 keys are very dirty (and possibly yellowed from chemical
> reaction).  I was thinking of dropping them in a bowl of vinegar (like you
> can do with pennies).  Is there any chance that this might erase the
> characters on the keys?  With my coco 2 I just put them in a bowl of
> dish-soapy water for a few minutes and that seemed to work OK.  Any
> thoughts?
>