[Coco] Mechanical keyboard upgrades for the CoCo

[Bruce W. Calkins]

On 08/24/2015 08:41 PM, Mark J. Blair wrote:
>> On Aug 24, 2015, at 16:44 , Barry Nelson <barry.nelson at amobiledevice.com> wrote:
>>
>> Re the stuck keys, you could try removing the key cap and then carefully spraying the key post with WD40, then put the key back and press it a few times. Don't soak it, just spray it lightly. Depending on the keyboard be careful not to lose the springs when you lift off the key.
> I've only seen the insides of a CoCo 1 keyboard so far, so I don't know if the construction is different for the 2 and 3. But the CoCo 1 has rubber dome springs under each key which provide the spring action and also press against the membrane. I would not recommend using WD40 for this application. Depending on what kind of rubber is used, a petroleum product may attack it. Also, WD40 is a lousy lubricant, because it just leaves gummy wax behind when the volatile kerosene carrier evaporates. It's a fine water dispersant, but a lousy lubricant.
>
>
Once you have cleaned all the parts of a CoCo 1 keyboard you could put a 
very light coat of a plastic compatible oil on the key sides. However I 
have never bothered.  Carefully cleaning each little key and the 
front/top cover has worked well on the few CoCo1 keyboards I have done.
Bruce W.