Omnikey Woes
Posted: 28 Jan 2023, 21:02
I have an OmniKey 102 "blank label." This keyboard is from the same era as the Gold Label, but it just doesn't have a label and it's more commonly found with white Alps. These keyboards also have just an AT/XT switch, rather than the DIP switch that's on newer
The keyboard just doesn't work. No lock lights ever come on. No keys register.
* I've tested with the original cable with a known good 5-Pin DIN to PS/2 adapter. Nope.
* I've tested with a different, known-good, OmniKey keyboard cable and the above adapter. Nope.
* I've tested with a different, known-good, OmniKey keyboard cable, the above adapter, and a known-good PS/2 to USB active adapter. Nope.
* I've tested with a known-good external TMK adapter. Nope.
* I've tested with a known-good internal TMK adapter. Nope.
I've tried all of the above with the keyboard switched to AT and XT. I've made sure power was off when connecting the 5-pin DIN to PS/2. I also made sure to only flip the AT/XT switch when the computer was off. I've tested the USB adapter and external TMK with the computer turned off and when the computer was on.
Other than a couple of partially lifted pads for the keyboard keys, which I did test for continuity, the only other repair was replacing a missing LED. I also do get continuity from the keyboard header pins to the onboard controller chip(s).
Any suggestions on what to test? I'm not an electronics person. I just have a multimeter.
The keyboard just doesn't work. No lock lights ever come on. No keys register.
* I've tested with the original cable with a known good 5-Pin DIN to PS/2 adapter. Nope.
* I've tested with a different, known-good, OmniKey keyboard cable and the above adapter. Nope.
* I've tested with a different, known-good, OmniKey keyboard cable, the above adapter, and a known-good PS/2 to USB active adapter. Nope.
* I've tested with a known-good external TMK adapter. Nope.
* I've tested with a known-good internal TMK adapter. Nope.
I've tried all of the above with the keyboard switched to AT and XT. I've made sure power was off when connecting the 5-pin DIN to PS/2. I also made sure to only flip the AT/XT switch when the computer was off. I've tested the USB adapter and external TMK with the computer turned off and when the computer was on.
Other than a couple of partially lifted pads for the keyboard keys, which I did test for continuity, the only other repair was replacing a missing LED. I also do get continuity from the keyboard header pins to the onboard controller chip(s).
Any suggestions on what to test? I'm not an electronics person. I just have a multimeter.