Backup and reassign of protected save games from on PS3 HDD to another

I think you're out of luck. As another answer states, you can only restore encrypted game saves to the same physical PS3. See this answer for more details (including a number you can use to call Sony about repair).

If you were a member of PlayStation Plus, it would allow you to store up to 150 MB 1Gb of game saves on Sony's servers, which would be accessible via your PSN ID. However, this doesn't really help you since your console is dead.