Display headers reflowed and display connector on mpu repinned?

Tried swapping the pias on the mpu?

I would suggest unplugging the score displays one at a time and see if it goes away. If not move to the next thing in the chain. If it does, you've narrowed it to a display.

Shawn

you usually get the rolling numbers when the displays are latched at the wrong time / failing to blank. If you have a new MPU installed its probably in the connectors, so redo the display latches, blank, bcd, and digit strobes at the top left MPU plug. If you have another bally/stern game you can try the MPU in the known working game to rule it out.

Its possible for a bad decoder chip on a display to effect other displays too even though there is resistors between them. So try each display one at time.

Make sure the header pin solder joints on the display boards themselves are good too. They break open a lot when the wiring harness flexes opening the backbox door.

That wouldn't affect either of those things

Player 1 looks ok try unplugging them all and the plugging them back in 1 at a time starting with player 1.

Have you also unplugged the credit/match display? As an above poster noted, if *any* of the displays has a bad chip it could affect the others. Beside that, I'd definitely take a closer look at the female connector that plugs in at the upper-left on the CPU board. Tug each wire, make sure you don't have a pin that's not locked into the housing that could cause intermittent/weak connection. I'd probably just re-pin that connector if it were my game. At very least that will eliminate that connector from the equation. I've just seen so many repairs on these machines ultimately boil down to connector issues. Good luck!