It beeps when it's done.
It beeps when you press the button.
It beeps when you place it on the base.
But today, it beeps no more.
I classify this as a repair.
Compare to a light bulb. When it burns out, the circuit is opened, just like our piezo buzzer being removed here.
There are some instances where a circuit going open can be very bad; those generally get fuses to cut off the supply. A transformer won't like its secondary (load side) going open while a lot of electrons are still flowing through its primary (supply side), for example.