[Coco] coco3 Keyboard trouble

[Bob Devries]

John, I'd be removing the motherboard and taking off the shield that's 
attached to the bottom, and checking that some creepy-crawlies haven't got 
in there.

The symptoms seem to indicate that The row which connects keys  K S  up 
arrow 3 : and ALT (PIA IC5 pin 13 or keyboard connector pin 12) is shorting 
to the one which connects to E M U left arrow 5 - and F1  (PIA IC 5 pin 16 
or keyboard connector pin 15)

Maybe the problem is inside the keyboard itself? Can you swap keyboards to 
test this? Even a Coco2 keyboard will do for this test.

Hope that helps

--
Regards, Bob Devries, Dalby, Queensland, Australia

Isaiah 50:4 The sovereign Lord has given me
the capacity to be his spokesman,
so that I know how to help the weary.

website: http://www.home.gil.com.au/~bdevasl
my blog: http://bdevries.invigorated.org/

----- Original Message ----- 
From: "John T Chasteen" <johnchasteen.2 at juno.com>
To: <coco at maltedmedia.com>
Sent: Tuesday, April 08, 2008 10:41 AM
Subject: [Coco] coco3 Keyboard trouble



> Coco Teck's

>

> My brother Paul wants to set up a 128K coco3 that has been setting in a

> box for at least 8 years

> I checked the keyboard and get real weird results.

> when I strike S   I see   SU on the screen

>                     K            KN  or KM

>                     C            CE

>                     M           KM

>                     /              /G

>                     ?             +?=

>                      E            CE

>                      U            SU

>                      3             35

>                       5            35

>

> MOST OF THE OTHER KEYS ARE OK

>

> All help is welcomed

>

> John

>

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