Bosch oven hbn655a issues

I recently purchased a used a Bosch HBN 655A oven after getting all hooked up when I go to push the set clock or to set timer when I press any of the + or - buttons to adjust the time nothing happens like those buttons are inop Also after using the oven once there is a heat button that illuminates when oven is preheating anyway after oven was off and cool the heat light is blinking real lightly any ideas please help thanks

via Bosch oven hbn655a issues
by Reed19889