A2000 keyboard repair

[Oldsmobile_Mike]

Probably an obvious question but does your A3000 work correctly with a different keyboard? Any battery damage to its motherboard? Bent or missing pins on the connector?

I've heard that this problem is usually caused by internal damage to the keyboard membrane, but it doesn't hurt to explore all possibilities. Good luck!

[Oldsmobile_Mike]

I actually just bought a A2000 replacement Keycap (Left Shift Key) from a person who 100% confirms it was a A2000 Keyboard. But the Cap is totally different.

Just because it's an "A2000 keyboard" doesn't mean it's the same.  C= used different manufacturers over the years, with many slight variations.