In the 21st century, repair men and ladies are gone to the way side, the labor prices make these small jobs not worth the effort, everybody is just replacing their units with new, used, aftermarket or trying simple repairs themselves as mentioned here, good luck.
You can clean with alcohol but once the CD laser lens is cleaned, wipe it again with a dry cloth as the alcohol will leave a residue, just clean it a second time with a dry cotton swab. Any adjustment for the laser strength will need the help of an oscilloscope to view the tell tale pattern at the proper strength. Dry or leaking CAPS are always a problem.