I followed Bob's excellent instructions at http://www.retrobits.../keyboard.shtml on two 1200XL keyboards. One is 100%, so hooray! The other keyboard, not so much. The reset button and buttons beyond no longer work (they did before).
[picture borrowed from site linked above]
All green parts have continuity, all blue parts have continuity, but green and blue do not have continuity, so the problem is somewhere in red.
Any ideas? Does anyone sell replacement mylar? Anyplace that might be able to make a custom one?
Edited by Smokeless Joe, Sun Feb 21, 2016 4:38 PM.