Yes, but given that the control PCB worked properly by itself, and stopped
working when attached to the key array, it doesn't seem to be a cable issue.
paul
> On Dec 27, 2019, at 7:43 PM, Paul Anderson <[email protected]> wrote:
>
> Do you have a known good cable you can swap out?
>
>
> On Fri, Dec 27, 2019 at 9:56 AM Paul Koning via cctalk <[email protected]
> <mailto:[email protected]>> 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
>
