Hi, I'm having a strange issue with the displays on a Supersonic I'm getting back up and running.

The game boots (new Alltek) properly, and goes into attract. I am able to start a game. However I have no displays.

There is a new Alltek Driver Board installed as well. As well as a new rectifier board (old one was trash)

Rectifier test points meter out correctly.
TP2 on SDB meters out at ~184 VDC, check.
Displays are all receiving ~172 VDC, check.

All fuses are good (obviously)

Any help on where to start poking would be great. What confuses me is that the displays are receiving the correct voltage.

Oh, and I have already tried unplugging the sound board and no change. Had this issue a few years ago on a Paragon.

Yes, I forgot to check J1. I did replace all the connectors, but I will go back over my work.

I suppose it's also possible it could be the square molex connector down the line from that as well? Or does that not pass through there?

They did have the glow, so I knew they were not totally dead. I also know that one of them is tested and working because i got it to replace one that was missing.

I just went to the game and fired it up, and the displays came on. Did the shift on boot which I'm familiar with.

This definitely leads me to suspect connectors. As I go through the rest of the game and work out bugs I will focus on those.