I recently got a Teletype and it did not come with the original keyboard but a much bigger one so I bought a small mechanical keyboard to use with it.
I received the keyboard today and at first things seemed to go very well. That keyboard has built-in backlighting and it was on when I plugged it the first time. I turned the backlighting off because I didn’t need it and kept typing and generating nice voltages. At some point I tried putting the lighting on just to see and when it reached the max lighting, Teletype immediately shut down. I got a bit scared, unplugged the keyboard and turned the modular off and on again and thankfully things seemed back to normal. Except that whenever I plug the keyboard it seems to start at full backlight and TT shuts down immediately. I tried to dim the lights as soon as the keyboard is plugged or to start with the keyboard either plugged in or not and nothing works so far.
I’m trying to find a way to make the keyboard initialize in a “no lights” state but so far plugging it in my PC and trying different things hasn’t been a great success…
Is this a known issue and is there a way to get around this ?
What I don’t understand is that it worked fine the first time I plugged the keyboard. Is there something in the module that could have fried or something like that ?
This is a bit scary for a $500 module…
Edit : my case is a 7U Intellijel with a TPS80W power supply that has lots of power available (I’m probably using about 20-30% of what it can supply).