Quoted from Yelobird:
Since I will be ordering parts, any other "yeah I would do that also" type parts? I think I have a new voltage regulator somewhere in my box o crap. Since I have all new boards including displays would it be reasonable to just get a new power board? I only ask this because this game is at a relatives house now and the thought of driving there every other week to trouble shoot a new part is a last resort I am hoping..
The rectifiers you circled are not part of the 5V supply. There is another rectifier on the power supply board itself that is used in the 12V -12V and 5V section. To make it bullet proof, I would recap the board and replace the header pins.
The GI pins and connector get toasty on BK. Should plan on replacing J8 (9 pin below the pair of fuses for 5V on the power supply board) both the connector with trifuricon crimp pins as well as the header pins.
Have a good look at the 12 pin rectangular connector on the power supply board. This is where AC enters the board and if toasty can cause problems.
There are 2 fuses for the 5V supply. Have a good look at the clips and replace if they look like they got warm (unlikely). Using a green scrubby, clean the clips (or replace) and clean the metal ends on the fuses (or replace).
While not typically a problem, you might want to plan on replacing the connectors J6 (15 pin) on the power supply and J2 (9 pin) on your combo board and with new trifuricon crimp pins and housing. This is where power leaves the power supply board and enters the CPU board.
With these updates, you should be all set!