Hello,

Quite suddenly, some, but not all of the buttons on the keypad of my microwave stopped working. I can still "add minutes" to get it to work, but I can no longer put in specific cooking time, turn on the light or turn off the fan.

The question is whether I can fix this replacing the keybad, which at around $60 I am willing to do, or whether it is the controller card, which I am not willing to to, as the Microwave was made in 1999.