(Topic ID: 240679)

Bally Power Play score display issues


By aoca

11 days ago



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  • 6 posts
  • 4 Pinsiders participating
  • Latest reply 9 days ago by aoca
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pinball boards (resized).JPG
ballylights (resized).JPG

#1 11 days ago

I have a Bally Power Play (Bobby Orr) pinball game which has a glitch At any point while playing the game the digital score lights go out. The play field remains lit but the targets etc are all dead.Sometime after a pause of a minute or two, the lights come back and the game goes into game over. Other times it doesn't reboot on it's own. i have to turn the game off. turn it on and it goes live but game over.

It sometimes also takes out the high score data. Checking for power it has a solid 5.0 reading and nothing appears amiss.What's causing the power surge/blackout causing the digital score display to go blank?

Then it will play fine for days or weeks. It will act up once or it will drop out repeatedly. One time, six games in row it crashed, and was fine as of the seventh game for about three weeks

ballylights (resized).JPG
#2 11 days ago

Does the game still have the original mpu board in it if so make sure that all the connections are clean and that there's no corrosion on the mpu board

Shoot some pictures of the back box circuit boards

#3 10 days ago

Here is a shot of the back boards. The blue tape was our id system to reconnect everything after moving the machine. We took the head off. There is slight erosion on the bottom of the one board from batteries which have been relocated by the previous owner.

pinball boards (resized).JPG
#4 9 days ago

Time for restoration.
You should start by resoldering all the connector pins on all the boards.
On the rectifier board by the transformer, do yo have burned connectors? If so you will need to rebuild that too.
Looks like the original large filter capacitors on the power supply. I would replace those.

#5 9 days ago

Can't see from your picture as it won't allow for me to zoom in but be interested in seeing the area where the battery was. Looks to be corrosion which would be another issue you need to care for.

#6 9 days ago

All the connector pins in the bottom right, going to the transformer were replaced. All the connectors for the display score boards were re-soldered.This is an earlier picture. the filter capacitors have been replaced.......

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