I recently got a new pinscore display for my Williams Funhouse PS -12739 p LED display.
Machine boots up and plays as normal but no display. Ribbon cables are oriented correctly I even bought brand new ones since the same condition was with the old ones.
I've tried different mpu boards and same thing no display.
It has one LED light on the board that's green so it looks like it's getting power.
I even sent it back to Marco and told them about it and they check the display and say it's working correctly.
One of the weird things is the directions says of course to attach the ribbon cable and also connectors J 100 and j101 . Well, there is no place for connector j100.
Also, in the directions it says that D1 with flash momentarily upon power up and D2 and D3 will stay lit indicating that the power supplies working correctly. There is no D2 or D3 on the board.
The reason I change displays is that the old one was starting to gas out but if I switch back to the old one the machine will not even boot up with it installed.
Very confused in Va!
Any help appreciated.

Bump

Sorry that I have not posted the pictures I just came back to this thread.
All ribbon cables are oriented correctly and I will post some pictures this afternoon.

Well I want to say that I am a complete ass!
You are correct sir it does go there I had it wrong the whole time!
I want to thank everyone who took the time to answer and gave comments to this thread.
Growing old and senile is not very becoming.