Sorry to hear about your health problems Russ. First things first of course.
One question: did you mean c1549 and cr1549? You were mentioning the 15v rail and c1559 and cr 1559 are on the 5v rail.
There you got me! I remember I was typing with the laptop on my knees. I had to look skew at the manual and though I even checked twice I made this mistake.
Success,
Albert
