BBC Master keyboard

From: CLeyson_at_aol.com <(CLeyson_at_aol.com)>
Date: Fri Jan 25 16:37:32 2002

Many thanks for the helpful comments from Pete, Tony and Adrian.

Lucky for me I discovered that the terminal pins unscrew.
ALL of the keyswitch terminal pins have be cleaned with a
mild abrasive (Brasso) and then washed in IPA. I had to
remove all of the switches to clean the rust from the
frame, but what the hell, they're back to original condition.

BTW I don't have any WD40 and would never ever use it on any
electrical or mechanical parts - never ever !
Also, as the leaf springs in the key switches are gold plated
I've left them 'as is' and not used any propriety "switch cleaners".
They should work for another 15 years :-)

Also, fixed the intermittent dry joint in the PSU and added the
composite video colour mod. Found the last one on the
Acorn FTP site http://acorn.riscos.com/documents/appnotes/

This was one of my better buys from Ebay. My only complaint
is the tatty case - I will have to think about "re-boxing" it.
Perhaps in a 1U 19in case, it will make the connectors a little
more accessible and support the weight of the Cumana dual
disk drives !

Thanks for the help
Chris

Chris
Received on Fri Jan 25 2002 - 16:37:32 GMT

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