Model A1314 (plastic antenna cover located centrally) can be disassembled. Under the plastic cover there is one screw, this frees the switch/pcb/battery assembly. When the keyboard ribbon is disconnected the whole thing will slide out sideways.
The white plastic base can be removed carefully by getting a couple of knives (use a sharp but heavy blade, fixed or locking, never a folder) under the short edge. Then carefully pull it off without bending or yanking, the adhesive will let go with no added heat.
The keyboard plate is fixed to the aluminium chassis with many small welds which I did not try to break. There must be at least 40 or so.
I did this to a broken keyboard that had a hot tea with milk spill over it, all the keys were gummed up. After removing everything I could it went in the dishwasher and the keys now operate freely. In a couple of weeks when it has had plenty of time to dry completely I will reassemble and try it out. It may not recover, but the point is you can disassemble without destruction. Even the adhesive survived the dishwasher and that white plastic is going to just stick back on.
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A kitchen palette knife is perfect for removing the plastic back. Once you have pushed it in, you can wiggle it down the long side and then gradually push it in further and keep going until you have separated all of the adhesive, without needing to bend or flex the plastic backing. On my A1314 the plastic cover was completely covered in adhesive, and it took some force to push the palette knife all the way in, but it only took a few minutes.
par Jon May
par Donald Fabian
That video does NOT show how to open the keyboard, "Donald." Maybe Donalds just aren't the brightest...