On Thu, Nov 16, 2017 at 10:48 AM, Douglas Taylor via cctech < [email protected]> wrote:
> I have a couple of LK401 keyboards and they generate a 'keyboard error - > 4' error on power up test when attached to a VT420. The problem seems to > be one or more keys that are 'stuck on'. > > When the keyboard is turned upside down and shaken I can get the self test > to pass. > > Is it possible to open the keyboards and repair this type of problem? > > I also have LK411 keyboards that have a PS/2 type of connector, is there > an adapter to let me use these keyboards instead of the LK401s? Are the > signals the same, only the connectors being different? > > Doug > > Try this? http://microvax2.org/wp/2017/05/24/lk402-aa-keyboard-fix/ If this is like your keyboard, you can use a product called Keypad-fix
