Date   : Wed, 05 Apr 2006 16:41:27 +0100 (BST)
From   : Tim Fardell <tim.fardell@...>
Subject: Re: Keyboard

On Wed, 5 Apr 2006, Anders Carlsson wrote:

> On Tue 2006-04-04 17:42, Scot Jones wrote:
> 
> > Not strictly BBC B related but I've a BBC Master
> 
> I thought this list covers the Master series as well? :-/

It does :-)

> When I got my Master Compact a while ago, some keys did not work
> properly. Inspired by this page, I disassemebled it completely:
> 
> http://www.classicacorn.freeuk.com/
> 
> I cleaned the keycaps, and perhaps even went as far as cleaning the
> rubber plungers on the back side of the keyboard. Afterwards the
> keyboard was much more responsive.
> 
> I only used soap water. Some isopropanol alcohol may be useful too,
> as described by people who restored Commodore keyboards - they all
> have similar mechanisms.

My Master has rows of individual keyswitches soldered onto a 
normal-looking PCB, as opposed to the "membrane" type keypads. 

The fault with mine was due to someone hammering too hard on the RETURN 
key, causing the solder pads to lift away from the PCB. Could probably 
have fixed using a big blob of solder, but I decided to run short wires to 
the next nearest pad. Much neater.