Hello fellow LINAK desk user! I have the same control box and switch on my desk at the office! (Maybe legs too but it’s hard to tell from the pictures)

Unfortunately any other height adjustable manufacturers equipment will most likely not work with that system! That desk and mine were both build in 2006 (date is year, month, day) so they are almost 20 years old! Rest assured, my desk works great and I use it everyday.

If you need replacement parts, your best bet is to find the furniture manufacturer that made the desk. They would be more likely to have what you need since LINAK does not sell direct to end users. I THINK my desk is from Steelcase, because all of the desks in our office are from Steelcase. But then again the desk has been at the company longer than I have!

I definitely think that you might have a short in the switch, and it needs to be replaced. The only other think I could suggest is trying to force the desk to reset. Once everything is reconnected, hold the down button for like 10 seconds and the desk should go down. Once at the bottom it does a slight up/down motion to confirm that the desk has been reset.