Sparky, I think you're on the right track.
Many years of experience have proven to me that the quickest way to find a single problem is to separate the circuit in half. Then you halve the half that showed the problem...then keep going until you have only a single item left. Doing that can identify which of 64 components is the culprit with only 6 tests and 512 with only 9.
Just keep in mind that things get out of hand quickly if you start jumping around during the testing or if you have more than 1 problem.
That's just my 2 cents worth.
