How to fix keyboard - from coding to electronics factory worker

In order to be well prepared, how can I successfully join an electronics factory after graduating at the age of 35? Learn from fixing keyboards(it’s a joke) Background The keyboard I using is the ErgoDox, an ergonomically split keyboard. More details about ErgoDox can be found in my previous answer. (former keycap color scheme + hand rest). After seven or eight years of work, it has been into the water, into the coffee, but also into the soy milk, now finally a few keys are not flexible, pressed a sticky feeling, can not provide a smooth coding feel....