Thank you all for the suggestions. I replaced the black wire from ba to -reg, repositioned and resoldered the red wire from +reg to IB, replaced the B side R1, and fluxed and resoldered several of the very close soldering points to ensure they weren't touching. I was having some difficulty measuring the B side 431, so I also replaced that again. Paul, you're right about the square pad for the D2 (good eye), I lost it when desoldering an earlier blow out of 90R9F that resulted in blown diodes. The diode seemed to operate OK, so I moved on, but maybe that explains my issues.
Anyway, after all that I turned on the power and still got the ~145 VDC on OA. I left the system on for a bit to perform some testing and then, while not probing the board or components, the 90R9F blew out again. At this point I'm thinking I'll start afresh with a new board and components because simply replacing that 90R9f and affected components might just put me back to square one in trying to locate the ~145 VDC on OA issue. Also, there's enough damage to the board at this point that starting anew is probably the way to go.
