Apple bluetooth keyboard is buggy - how to fix it?

Question

Apple

The keyboard is connected to the macbook. Today I noticed that with the shift some letters are not pressed.
I began to wet all the utilities that intercept something - to no avail, then I tried it on another computer - the problem remained (conclusion: it's in the clave).
After a simple diagnostic, I found out that the EDC keys are not pressed with the shift in both layouts, and E is not pressed with either the left or right shift, and DC is not pressed only with the right.
If you hold down both shifts, sometimes Expos pops up for some reason. In this case, the Exposure button (F3) does not work or is pressed only every 3-5 times.
I did not take any rough physical actions with the keyboard, it seems that everything worked yesterday.
At the same time, today I installed the last update of Lev, but I don’t remember whether there was a problem before it or not.

Answer 1

Most likely not. There was a similar problem on a laptop - the keyboard unit was replaced under warranty.