[old_tv_nut]

"When I adjusted the ACC, I didn't have the color bars up, or anything for that matter, as the instructions only noted to put it in align mode and do the adjustment. Now the APC did use the color bars as it was a purely visual adjustment. Once I get all the modules back, I'll try the ACC with color bars."

Aha - I suspect this will make a difference - let us know the result.

Again, I'd like to know if you are trying to fix a noticeable problem, or just chasing a voltage noted on the schematic.