I spilled coffee on my old (2006 polycarbonate) MacBook. Now the trackpad works, but not the keys. How can I diagnose and fix my laptop keyboard?
Earlier today, I spilled coffee on my MacBook. Immediately, I shut it off, tried to sop up what I could, then turned it over and took off the top case.
At the time of the spill, the keyboard keys did respond.
After that, I checked the logic board (thankfully, nothing got on it). Then, I pulled the keys off of the top case so I could soak up the remaining liquid then wipe it down with alcohol. I put back on as many of the keys as I could (I broke some of the springing braces that go under the keys), then reconnected the top case, and closed it up.
Now, the keyboard keys do not respond. I type and nothing happens. The trackpad, however, does work. I plugged in an external keyboard, and the computer responds to key presses from that.
Before I buy a new top case, I'd like to know conclusively what's going on. Unfortunately, I can't seem to find a way to run the Apple Hardware Test
without the keyboard. The external keyboard I used is a wireless USB keyboard that is not ready during startup. Will a conventional USB keyboard do the trick?
Any other ideas about what I should be trying or what's going on here?