Timer fault?

Bossch hmt 9656/03 Microwave all works well but timer/clock does not work or control time setting. from start goes to 1 minute correctly & counts down ok. control knob will not accurately adjust to extend time
dave-costello, April 2023


done
not quite. timer is working ok but the override button for adjusting the time is faulty

dave-costello, April 2023