While you wait for answers, we may have found some information which could help you.
Click here for Bosch Double OvenBosch Oven Bulb Failure?
Bosch oven door - HBN331.2B – Hinge Snap?
Removed oven door from Bosch Oven FD 9604 and hinge has shut?
Door hinge on Bosch oven ?
How to remove the fittings to a Bosch light bulb oven?
hinge from oven snap shut?