On Wed, 4 Mar 1998, Marty wrote: Is the keyboard working properly? The Sol-20 keyboard is a capacitive unit in which pressing a key pushes the insulated side of a piece of one-size metallized Mylar film against plates on the printed circuit board, changing the capacitance. These pieces of film are attached to the key mechanism with foam. Over the course of time, this foam disintegrates, the metal backing mysteriously disappears from the film, and pieces become detached from the keys and rattle around inside the keyboard wreaking havoc. If you are having problems with the keyboard (or the garbage on your screen looks like it could be the result of stuck keys), you may want to check for this problem. The PC board is held to the keyboard assembly with screws and is easily removed. After removing the keyboard assembly, you can test the machine by using parts salvaged from another capacitive keyboard (or even a piece of foil held behind thin plastic) to complete the "key capacitors". There are instructions somewhere on the classiccmp archive for rebuilding a Sol-20 keyboard using a PC-clone (Keytronics?) capacitive keyboard as a donor. It's on my relatively long list of things to do. -- Scott Ware ware(a)xtal.pharm.nwu.edu