While you wait for answers, we may have found some information which could help you.
Click here for Bosch Oven PowerHow to remove the fittings to a Bosch light bulb oven?
hinge from oven snap shut?
bosch ovenHBA13B1.OB bulb cover?
fix oven cover?
Can't get Bosch oven door back on after cleaning?
how can i increase volume on bosch timer?