Hi

The original Amiga 1200 that I used for the Apollo had a strange issue which I had thought was the card. The card would work fine with the case open but stop working as soon as I closed it. It was only after some looking closely at the motherboard that I dicovered this jumper.

http://www.scuzzscink.com/amiga/scuzzblog_july18_9/car_sbd_040718_45.jpg

I had screwed the shielding down where the PCMCIA slot is broken after finding the screw was missing, and each time I closed the case, the keyboard would press on the shielding and short out the motherboard and stop the computer from working, as it came into contact with those pins. I have never been able to determine why and wondered if anyone here knew.

scuzz

@scuzz

You can find info about it on A1200 PCB schematics:

http://www.amigawiki.de/dnl/schematics/A1200_R2.pdf

Page 14,IIRC.

I’d put a drop of silicone to prevent them from shortcircuiting, or even some duct tape covering them.

Saluditos,

Ferrán.

_________________
Amiga user since 1988
AOS4 Betatester
Member of ATO Spain
A1 Cfg
OS4 SCR
A1200

@scuzz

https://www.google.com.au/amp/amp.timeinc.net/fortune/2012/11/10/apple-macintosh-jr-the-power-to-crush-the-other-kids
PS and I wouldn't be caught dead in a car so fugly. Hoondai all the way.

_________________
Never underestimate the bandwidth of a station wagon full of tapes hurtling down the highway.

I serve King Jesus.
What/who do you serve?

@scuzz

More info on these pins: looks like it's a common modification to add a reset button (one of the pins in the image is KBD_RESET, the other one is ground), like in towers.

Saluditos,

Ferrán.

Last edited by Ferry on 16-Jul-2018 at 06:34 PM.

_________________
Amiga user since 1988
AOS4 Betatester
Member of ATO Spain
A1 Cfg
OS4 SCR
A1200