Those sheets do have some water insulation (that glue that holds 2 bottom layers together), but it looks like it's not enough. I don't know why Apple doesn't make that wiring part (those plastic sheets) completely waterproof. If you decide to repeat my steps, be extremely careful! It's very easy to cut the rubber "nipple" or to cut the plastic film, or to break the wiring! Be gentle 🙂 I repeated the whole procedure 2 more times, and now it looks like it works permanently and I'm actually typing this text with my fixed keyboard, using my working left shift 🙂 The whole procudere cost me 0$ and 1 hour of time. However, 10 minutes later the key started to "stuck" again. It was changing pressed status back and forth when I moved the knife, so I had to find the "sweet spot" and then pull out the knife.Īfter couple of minutes of trying, I have finally managed to fix the key.
I figured out that sliding a small knife between glued bottom and middle sheets (it's quite tricky to separate those film sheets, but a sharp knife helps) and then carefully twisting the blade (I mean rotating the blade around longest axis) to separate the film sheets even more started to affect the shift key status in the keyboard viewer! The key started to "unstuck" for the first time since the spillage. I was trying to separate those film sheets under the "nipple" if the left shift key with a knife, monitoring the shift key status with OS X Keyboard Viewer (had to stop KeyRemap4MacBook and also had to press "Cmd" button on the physical keyboard to make shift key actually appear pressed in the keyboard viewer). The bottommost plastic film sheet has holes right under the nipples, being covered with the middle layer (which is glued to it) with wiring and round wiring pads aligned with holes in the bottom layer. It looks like there are at least 3 plastic film sheets, 2 bottom of which are glued together (and might look like they are one single layer), and the top one is just aligned with them and has those rubber nipples. Plastic layers are just below rubber nipples, which are glued to the top layer. From what I have seen, the core of the problem is somewhere inside of those plastic layers with wiring, which you can see if you remove black key caps and then white scissor mechanism. I have found quite usable remap rule by remapping my "fn" button to act like left shift (that key is right below left shift, so you can use your pinky finger to press it just like left shift) and remapped right shift to work as "fn" button, since nobody uses right shift anyways.īut broken keyboard was still bugging me and I decided to take out the key caps (one more time, did that three times after the spillage) and investigate the issue a bit more hardware-wise.
I have been using KeyRemap4MacBook based solution since then (in my case just starting that app was disabling stuck left shift key totally), but I got sick of not being able to use my left shift key. I had the "stuck left shift" issue after spilling some water on the keyboard. It looks like I have found the 0$ real hardware solution to that problem, read my story below.
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