[Coco] Fixing my "F" board TDP-100...

[Zippster]

I have a CoCo1 that I believe is an F board.  It has the mylar keyboard cable and the jumpers
for 16 or 64k.  

Pic here —> <https://drive.google.com/file/d/0B1sgl615FlGndzNSODJLbExreXc/view?usp=sharing <https://drive.google.com/file/d/0B1sgl615FlGndzNSODJLbExreXc/view?usp=sharing>>

If that’s the same board, it’s connected to VCC and VSS on the 6847.  It’s a decoupling cap.
Use .1uF

- Ed


> On Mar 7, 2015, at 1:43 PM, Al Hartman <alhartman6 at optonline.net> wrote:
> 
> Took another swing at it this morning:
> 
> 1. One of the connections from the MDP UVD was soldered to one end of C22. The clip and wire had obviously broken off the board. Whoever did it, put a lot of solder on the leg. In trying to desolder it, the capacitor disintegrated. I need to know what value to put there. The only schematics I have are for earlier boards, and the part numbers are different.
> 
> Does anyone know what value this capacitor should be? C22 is connected to the 5v line. Is there an "F" board schematic or parts list out there?
> 
> 2. The HJL Keyboard was made by Oak Switch Systems. I'm now looking to see if I can find a replacement key plunger for it, as it is impossible to desolder and resolder a keystation. The key stations are plastic welded to the metal bottom. But, they keytop comes apart, and the plunger can be replaced.
> 
> It's the same kind of keyboard as used in the Osbourne Computer: http://deskthority.net/photos-f62/osborne-1-oak-switch-systems-full-travel-membrane-keyboard-t7855.html
> 
> I have to try to find a plunger and replacement "9" keycap.
> 
> -[ Al ]-