I've been salvaging computer stuff for ages. Rebuilt many an IBM Thinkpad from parts, my desktop has an old server SATA/SAS RAID card in it that's smoking fast. Repaired monitors by replacing the blown capacitors that usually makes them die. I hate to see functioning hardware thrown away if it can be fixed and put to good use. Like giving it away (so I don't have a bunch of old crap around but someone else is happy).
A coworker threw an A1314 keyboard away from one of our few remaining Macs. Couldn't remove the plug to replace the batteries.
I have an old Mac Mini that I've resurrected with more RAM and Core2 processor, but it doesn't have a keyboard or mouse. I've got an old mouse in a drawer, don't know if it works just yet. Imagine it does. If not, I have a M$ Bluetooth mouse. And the HDD just died, so a $54 SSD will run nicely in it. Maybe I can scavenge an SSD out of one of the 2010 MB Air computers we have piled up with a miniSATA adapter.
Took the plastic cover off the center by prying easily as to not damage it, remove the electronics by pushing them out the switch end, removed one battery. Other was stuck. Cap was stuck. Removed plastic from bottom of keyboard in attempt to remove everything so I wouldn't have to worry about the keys getting damaged or wet, but the frame holding the keys is installed with what appears to be about 100 "peens" if you will. (you can remove this cover by gently prying up a corner and slowly lifting the corner to release the adhesive, but there is nothing to be gained in this)
I have a 1" thick chunk of steel bar. Covered the open end of the keyboard with some tape, bit of paper towel on the block to prevent marring and tapped it, gradually harder and harder against the block of steel. I would check progress every so often with the battery that came out easily and I could see the top more and more indicating the swollen one was moving. It finally came out. Since I didn't use the iFixIt hack to melt the bottom cover with a heat gun, it stuck back into place readily.
I used JimJim31e's idea after bending a nickel to an unrecognizable form. Big #4 flatblade screwdriver held with a pair of visegrips and was able to turn the plug. Now to clean out the corrosion. Soaking the corroded corner in vinegar (I wish I had a stronger acid), as well as the plug. Will reassemble later and have a working keyboard for free. I love free.
It will become my Kodi (XBMC) music player for my TV. How cool is it to find a useful task for an old Mac product.
Thanks JimJim31e!
Doc