The rectifier voltages look pretty good except TP3, but that's an unregulated voltage and can swing wildly yet still be regulated into shape.

I admit I haven't read all the posts, but may I suggest taking a step back?

Locate J5 and J6 on rectifier board (if the rectifier is the same as Fathom; I don't have my 8bd manual handy just now).

Set meter to AC VOLTS 200 volt range:

J5 pin 1 (YEL) to pin 7 (YEL/BLK), and pin 4 to pin 8 =?
J5 pin 2 (RED) to pin 3 (RED) =?
J5 pin 6 (GRN) to pin 9 (ORN) =?

J6 pin 1 or 4 (PUR/BLK) to pin 2 or 5 (PUR) =?
J6 pin 3 (BLU) to pin 6 (BLU) =?

If you have already performed these tests pretend like I posted something intelligent.