Bathing Your RK-9000, Part II
So yesterday, the RK-9000 I use at work (twin of the one that got the recent beer bath) got a soda bath. Brought it home last night, and gave it the same treatment (soak and rinse followed by several hours on the drying rack). This evening I tested it, and... the 'N' key was inoperative.
My best guess is that a piece of board chow got washed down into the 'N' switch by the initial soda wave, got stuck/wedged in the switch contacts, and didn't come out in the soak. (It was diet soda, but Diet Mt. Dew has some orange juice in it so unlike most diet sodas it is slightly sticky when it dries.)
My initial thought was to open the existing switch up to try to clean the internals, but it is very difficult to get the top off a Cherry switch if you have a plate mount keyboard. I decided to try removing it from the keyboard, opening it up to clean the contacts, and putting it back; but when I tried to remove it I applied too much stress to it while one of the pins was still stuck to the PCB (due to incomplete removal of the existing solder), and ended up snapping the pin off.
Fortunately, I had a few spare MX blue switches on hand. (I guess that makes me a pretty hard-core keyboard geek...
A few minutes with the soldering iron, and the office RK-9000 appears to be fully functional again. Swapped it for the home one, and will use it tonight to make sure it is tuly 100%; if all is well, I'll just take the other one to the office tomorrow.
Hopefully I'm done spilling drinks into my keyboards for a while. I went years without a spill, and then managed to have 2 in as many months.
On the plus side, both RK-9000s are now cleaner than they've been in years.
It'll be a relief to not be typing on the POS Dell rubber dome keyboard I've been using at the office for the past 2 days...
Edit: Alternative theory on the failed 'N' key... maybe the pin on the switch was already about to fail (due to years of pounding), and the stress of popping the keycap off was the final straw (so no contamination issue, just a mechanical failure).