@sharri , I went back through and re-read the posts in this thread, and once again want to thank you for the wealth of helpful information you provided for SA 10 owners. I copied and pasted and made a document which I saved and also printed of the procedures to check LOP and TB1 and TB2 and I am planning on doing that tomorrow.
However, I have a theoretical question: if one's laser did take a crap and one was having issues finding a tech anywhere close to local he or she trusted to do the work, how would it work to buy either a SACD dedicated transport, OR a cheaper SACD player, and connect either of those to the SA10 and therefore use the SA10 as a separate SACD DAC?