So I pretty much finished this project.
First, I soaked the rubber mat in warm water, no soap (rubber hates soap, at least that's what I've been told).
Then I washed all of the keys.
While all of that was drying, I had a crack at cleaning up the two electrode sheets. I tried with 1000-grit sandpaper first. It worked, kind of turned the clear plastic around the contacts opaque, but the contacts went from bronze-ish to silver like they're supposed to be, so that's all that mattered.
After I finished the first row, I decided to try something besides sandpaper, and grabbed a pencil eraser. It worked just as well, with no marring of the surrounding plastic.
Half an hour later, I had both sheets done, all nice and silvery again. I reassembled the keyboard, and BAM! Not much improvement.
If I wanted to type REALLY hard, I could get most keys to work on the first press (as opposed to having to hold each one down for several seconds for a reaction). Others had to be pressed dead-on before they would register. It IS better than it was, but it's definitely still not usable, at least not for anything over 5 WPM.
First, I soaked the rubber mat in warm water, no soap (rubber hates soap, at least that's what I've been told).
Then I washed all of the keys.
While all of that was drying, I had a crack at cleaning up the two electrode sheets. I tried with 1000-grit sandpaper first. It worked, kind of turned the clear plastic around the contacts opaque, but the contacts went from bronze-ish to silver like they're supposed to be, so that's all that mattered.
After I finished the first row, I decided to try something besides sandpaper, and grabbed a pencil eraser. It worked just as well, with no marring of the surrounding plastic.
Half an hour later, I had both sheets done, all nice and silvery again. I reassembled the keyboard, and BAM! Not much improvement.
If I wanted to type REALLY hard, I could get most keys to work on the first press (as opposed to having to hold each one down for several seconds for a reaction). Others had to be pressed dead-on before they would register. It IS better than it was, but it's definitely still not usable, at least not for anything over 5 WPM.