I'd like to go a little closer to the transformer though. At J6, I am getting ~1.8V at pins 1-4 and then ~4.0V at 5-9, or the other way around, can't remember now. That gets me to the 5.9V, but is that proper?
Next, the BB GI is on and working, so at least that is good.
At the PF GI connector (J9? There is a sticker over it) is giving me ~4V at pin 1 (WHT-VIO) and ~1.8V for pins 5-7. This is where the electronics loses me. Under the bottom left GI area, the WHT-VIO connects to one side of the socket, but then the VIO connects to the other side. If we are adding voltages, wouldn't they have to go to the same side and then have a ground at the end of the daisy chain? The right side GI used to work, but then one day, all gone. I would assume that side is fine, aside from all of them being out. I'm stuck and frustrated at this point.