I had the same problem about five years ago with my 11s1. I had the laser replaced at a Marantz repair center outside of Chicago. Its worked fine since. Check with Marantz if there is a repair center near you or where could you send it to get fixed. It wasn't that expensive five years ago. Bottom line it is repairable.
Marantz SA-11S1 SACD player not reading hybrid SACDs
I have had one of these units for several years. It loads regular CDs fine, but will read only about 50% of the hybrid SACDs I have tried to load into it. It will try to load for about 30 seconds, then the display says "can't read". It seems to especially dislike trying to read RR and BIS hybrid SACDs for some reason. Has anyone else encountered this problem with this unit or guess what the problem might be? What is interesting is that I recently acquired a Marantz DV-9600 DVD/SACD player. It appears to have a similar loading mechanism as the 11S1. So far it has loaded every disc that the 11S1 has failed to do, and sonically I find it similar to the 11S1.