[Coco] CoCo 1 troubles

[Arthur Flexser]

While you are reseating chips, it wouldn't hurt to do so with the 6809 and
the two PIAs.  If you have another CoCo, try swapping the 6809 in from the
other one, and see if it affects the problem.  (A CoCo 3's 68B09 will work
in a CoCo 1.)  I've seen 6809 flakiness do odd things.

Art



On Mon, Dec 21, 2020 at 9:09 PM Salvador Garcia via Coco <
coco at maltedmedia.com> wrote:

>  Update:
>
> Stuck cartridge cover. I opened the CoCo 1 and found the spring correctly
> placed on the hinge of the cover (or flap). No noticeable grime, but I can
> attempt to clean it to see if that makes a difference.
>
> Any cleaning suggestions? I could attempt to remove the metal rod that is
> part of the hinge, but prefer not to do so unless I have a concise idea on
> how to do this.
>
> As always thanks.
>
> Also, I opened up the floppy controller cart and reseated all chips,
> although they all looked like they were in place. I also cleaned the edge
> connectors. On side of one of them had some black stuff on it. Some of it
> came off with alcohol, more of it with a soft rubber eraser.
>
> I hooked everything up and this made no difference in the keyboard
> behavior described in the initial post.
>
> FYI: My CoCo has an "E" motherboard.
>
> Salvador
>
>
> <snipped>
>
>
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