Working on an bally kiss that had some issues. Have pretty much all of them worked out except for the displays aren't working. Upon power up the rectifier board blows f2 pretty much right away. I have replaced the four diodes on the board already and gave it a good reflow and changed the header pins to .156 connectors. If I unplug j3 and power it, the fuse does not blow. I unplugged the displays to see if a bad display was blowing it, however it still blows the fuse with the displays unplugged but j3 connected.

Everywhere I can find just says it's either bad displays blowing it for one or bad diodes. What else can I check?