Do you have a known good cable you can swap out?
On Fri, Dec 27, 2019 at 9:56 AM Paul Koning via cctalk < cctalk@classiccmp.org> wrote: > Gentlepeople, > > I'm doing some work with my Pro 380 over the holidays, but have run into a > snag because both my LK201 keyboards are dead. They fail poweron self test > -- LEDs stay on and no response to any keypresses. > > The odd thing is that the circuit board itself seems ok; I had a spare > board that tests fine by itself, so I installed it as a replacement control > board on one of those keyboards and now it fails. So that suggests there's > something wrong with the key array that breaks selftest. > > I don't understand that because the documentation says a stuck key would > produce a selftest pass along with an indication reporting stuck key. And > while I know LK201 keyboards don't like spilled liquids, one of those > keyboards definitely hasn't been abused that way and I don't see signs the > other one has, either. So having both fail the same way is puzzling. > > Any ideas? > > I'm considering building a PC keyboard LK201 emulation, should be a fairly > simple bit of Arduino code. > > paul > >
