Display light failed?

Blaupunkt
Bosch Gruppe
SeattleRDM 169
Serial No. BP8650X1174042

Please can you advise.
The above radio is fitted to a M/B 230 and has failed.
The Display light went out, came on after a short while and now failed to light completely.
Can the light be replaced?
If I remove the set from the car will I loose the ‘set up’ programming?
I would appreciate your reply.

Regards,
Nigel Giles
East Devon, UK