[Coco] Unusual problem

[Bill]

The only socketed pins are the memory and the GIME. All have been 'pressed'
to reseat.

Everything else is clean and looking good.  This Coco 3 has been taken very
good care of.

-----Original Message-----
From: coco-bounces at maltedmedia.com [mailto:coco-bounces at maltedmedia.com] On
Behalf Of Luis Antoniosi (CoCoDemus)
Sent: Friday, November 01, 2013 11:48 AM
To: CoCoList for Color Computer Enthusiasts
Subject: Re: [Coco] Unusual problem

He does not like to work in an office :)

My first guess is that is some broken solder and when you move it chances
that it make contact or not. Or even a dirty gime pin. Open it and press
each socketed chip to reseat them. Make sure you don't have static
electricity first by touching any grounded metal. Try to reseat the memory
expansion tool. Since its an add on it could move when you move the coco3.

Second guess would be the PSU. I would try to test this board on your second
coco3 psu. Check if you have any electrolyctic like this:

https://pbs.twimg.com/media/AuETErHCIAAyqkb.jpg:large

The 220uF in this pic is corroded.

other commom coco3 problems:

- gime chip must have the pins cleaned and reseated (you can only remove it
using a special tool)
- 6809 cpu