deskthority

Hi all, I have a Cherry G80-1000HAI from 1987, which mounts Cherry MX Black switches, soldered to the PCB.
I noticed that some keys are harder that the others, i tried to open the switch to check if the spring moved some way or there were something obstacling the movement, but nothing.
Are there any lubricants for switches? Can i solve something lubricating the switches? or it's the different amount of use that changed the hardness of the springs?

Thanks in Advance, Lorenzobrak.

The keyboard nerds have established quite the science of lubing switches. It's normally understood as optimizing though, not as fixing.
Never heard of aging springs in mx switches yet, don't think that's the cause.
Do the switches feel dry/scratchy?

erm.. no.. it feels just "harder" to push down! what it could be?

Have you opened a hard switch and a lighter switch and compared?

well, they seem completely equal!

What color is the stem of the switch? It could just be stiffer springs.

You could try cleaning one to remove dust and other particles, then re-lube it