home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!ogicse!news.u.washington.edu!carson.u.washington.edu!whit
- From: whit@carson.u.washington.edu (John Whitmore)
- Newsgroups: sci.electronics
- Subject: Re: Terminal keyboard keys quit working - any recourse?
- Keywords: Terminals, keyboards, keys, do-it-yourself
- Message-ID: <1992Nov9.225519.15443@u.washington.edu>
- Date: 9 Nov 92 22:55:19 GMT
- Article-I.D.: u.1992Nov9.225519.15443
- References: <1992Nov8.215943.3943@beaver.cs.washington.edu>
- Sender: news@u.washington.edu (USENET News System)
- Organization: University of Washington, Seattle
- Lines: 26
-
- In article <1992Nov8.215943.3943@beaver.cs.washington.edu> jon@cs.washington.edu (Jon Jacky) writes:
- >I have a Heathkit H29 terminal I built from a kit eight or nine years ago.
- >It's been working great all this time, but just recently it has developed
- >a problem. The keyboard keys have begun to go dead, one by one.
-
- >Does anyone have any advice for what to do about this (other than the obvious
- >advice of getting a new terminal). I recall a thread a while ago about
- >putting things in dishwashers ...
-
- If the keyboard is similar to that of the H19s, you can
- construct (or purchase) a keycap puller and pull off the offending
- keycaps. Looking straight down into the keyboard, you will see
- the contact fingers, and working the mechanism you will see the
- plunger operates a gate that pushes the contacts apart UNTIL you
- depress the key.
-
- So, depress the key, and wipe the contacts (gently) with
- a lintless swab, possibly with some solvent. Blotter paper
- dipped in methanol would work.
-
- Alternately, turn the keyboard upside down and spray
- your favorite contact cleaner/enhancer into the key. You
- want the excess to drip out, of course (which generally
- means that dishwasher-treatment is contraindicated).
-
- John Whitmore
-