Managed to fix a few keys now.
It seems that a nicely working key switch has about 200Ω resistance when pressed, open circuit when not working at all, and a higher resistance (600-1800Ω?) when you really need to mash it down to register, with the resistance decreasing the harder you press it down.
It seems that a nicely working key switch has about 200Ω resistance when pressed, open circuit when not working at all, and a higher resistance (600-1800Ω?) when you really need to mash it down to register, with the resistance decreasing the harder you press it down.