Hello, I've had partial success with the attached tip gleaned from comp.sys.mac.portables (see below), so I thought the List might like to know. When I say partial I mean that I have repaired broken lines in the keyboard circuit sheets so that all keys now function, but they are still not very responsive. I think I will have to make a further attempt to paint over the blackened areas to improve the keyboard response. With regard to this, does anyone know how the Duo keyboards work? As far as I can see it is not though a direct electrical connection when a key is pressed, since the circuits on the plastic sheets do not face one another. I'd like to know because it may have an impact on the amount of conductive paint that can be applied to a damaged sheet. Additional notes: In the UK the rear demister repair kit can be bought from larger branches of Halfords for about 8gbp and is called Electro-Cure. Do not attempt to use the provided brush as this is too coarse - I found that a cocktail stick worked pretty well. Don't attempt this unless you have a steady hand and plenty of patience. The usual practices regarding cleaning the keyboard apply - disconnect all power sources before removing the keyboard, have plenty of space, have plenty of time, prevent access to your work area by children and pets, ensure you know the keyboard layout (lay the keys out in order or have a screen dump from the Keyboard Control Panel printed out), keep everything as clean as possible and finally don't knock off the caps-lock LED ;-) Michael _____________________ Michael Clemmetsen email: [EMAIL PROTECTED] --------- Start of quote --------- Subject: Duo Keyboard fix Date: Tue, 24 Aug 1999 14:32:02 -0400 From: "Nick Dunklee" <[EMAIL PROTECTED]> Organization: Internet Ramp News Cache Newsgroups: comp.sys.mac.portables Another fun tidbit I have discovered. I found a way to fix "dead" duo keyboards. It will probably also work on other keyboards that use the transparent circuit boards between the layers. If you feel gutsy enough to take your keyboard apart (not hard, just remember where the keys go!) and you have a multitester, it's not hard to fix. You use the multitester in resistance mode to look for breaks in the circuits on each individual layer. Normally breaks are visible as black or corroded spots. You could also rig up a 1.5 volt battery/flashlight bulb combo with two bare wires to serve the same purpose as the multitester. To fix the breaks after you find them, you need to find something either called "rear window defogger repair kit" or something similar. The stuff I bought comes in a little bottle and cost $6.00. It's made by LocTite. You take this stuff and paint it over the break in the wire, without accidentally connecting wires together and after it dries the keyboard *should* work again. It's worked on two of my keyboards great so far. The only possible problem that I see with this solution is there is a possibility of it scraping off with time and the wire would break again. Or other areas would corrode and break. This solution should work for quite a while though. If you want to save a few bucks and not have to order a keyboard, try it! --------- End of quote --------- ---------- Duo/2400 List, The friendliest place on the Net! A listserv for users and fans of Mac subportables. FAQ at <http://www.themacintoshguy.com/lists/DuoListFAQ.shtml> Be sure to visit Mac2400! <http://www.sineware.com/mac2400> X-Router | Share your DSL or cable modem between multiple computers! Dr. Bott | <http://www.drbott.com/prod/MIH120.html> Midwest Mac Parts <http://www.midwestmac.com> | After-market parts for Macs. Fix your ticking dock for $59 w/ trade-in of PS. 888-356-1104 PowerBook Guy is | Click here! Everything PowerBook! | http://www.powerbookguy.com
