Apple Keyboard A1243 QWERTY

Apple Keyboard A1243 – QWERTY Layout (USB) The keyboard is recognized by the system, but does not type. On the website keyboardtester.com, it detects that a key is continuously sending a signal, without identifying which one. Mechanically, it is in perfect condition, with no stuck keys or visible damage. I suspect a failure in the internal circuit board. Ideal for parts or repair.