NEW Putting together my baby pacman

Well I have ordered all of the replacements for the IDC connectors.
And just to make sure there isn't any confusion, I also upgraded my MPU to the Arcadeshop one.
Once I get my playfield pieces I'll report back on my progress.

Agree with Brian. Put it all together and then test. You will most likely have to replace all of the IDC connectors and is a good preventative measure. On mine I have also seen the connection test fail when initiated from the MPU but then reliably work when initiated with the test switch inside the coin door.
 
Ok.
I've finally gotten all the parts for my playfield as well as changing out all of the IDC connectors on the wiring and the game powers on.
I think there is an issue with the Vidiot board though due to while playing the video portion of the game the pop up ghost keep popping up and down and my score goes up and theres a power pellet while I'm playing before I even go to the pinball side of it.
I'll be open to suggestions on that.
I was also going through the playfield lights to make sure that everything works.
I have two solenoid PCB and when hooking up one all the lights are functional.
When I hook up the second solenoid PCB I'm not getting any lights lighting up on the circled areas.
I'm assuming that its the area circled in red that has gone bad, but I wanted to see if anyone here knew exactly which ones power which part of the playfield?
Any suggestions?
 

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Issue Number 1: when you say ghosts popping up I presume you mean drop targets? My guess is you have a stuck switch causing them to register as closed and dropped. This forces them to reset constantly and the game is crediting you as having dropped a ghost which after 6 times you earn a power pellet. Verify this problem by simply testing the switches attached to each ghost to see if they are closed. Then adjust to open.

Issue Number 2: the lights you have out with the second board all tie to 2 of the SCRs leading me to believe those SCRs are bad. See the linked diagram which shows you that SCR 9 and 17 (I believe they are labeled with a Q on the board) need to be changed. Pretty sure this is your issue since your other board doesn't have this issue.

http://pinwiki.com/wiki/index.php?title=File:Baby-pacman-lamp-scr-diagram.gif
 
Issue Number 2: the lights you have out with the second board all tie to 2 of the SCRs leading me to believe those SCRs are bad. See the linked diagram which shows you that SCR 9 and 17 (I believe they are labeled with a Q on the board) need to be changed. Pretty sure this is your issue since your other board doesn't have this issue.

http://pinwiki.com/wiki/index.php?title=File:Baby-pacman-lamp-scr-diagram.gif


Pulled Q9 and Q17 and replaced them with new ones and still have no change.
Any other suggestions?
:(
 
Pulled Q9 and Q17 and replaced them with new ones and still have no change.
Any other suggestions?
:(

Assuming I understood your description of the problem correctly - you have two driver boards... one of them has this lighting issue and the other does not? Assuming that is correct we can rule out your bulbs, sockets and other playfield parts as well as the wiring up to the driver board itself.

My next suggestion is to trace continunity between the legs of the SCR and the pins on the driver board itself. If you hold the driver board up to the light you can see the traces and parts and see where they go. Make sure the two legs ultimately reach the pins and that the ground is tied to the ground elsewhere on the board. That would be my next suggestion.

I had a board where I needed to carefully reflow the header to get the light working right - and another spot on the board where the SCR solder pad was lifted but it was not obvious.
 
Yes.
I have the two solenoid boards with one working with all the lights and the other with the issue.
I give a good look at the board and see if any of the traces are broken and where they follow to.

Assuming I understood your description of the problem correctly - you have two driver boards... one of them has this lighting issue and the other does not? Assuming that is correct we can rule out your bulbs, sockets and other playfield parts as well as the wiring up to the driver board itself.

My next suggestion is to trace continunity between the legs of the SCR and the pins on the driver board itself. If you hold the driver board up to the light you can see the traces and parts and see where they go. Make sure the two legs ultimately reach the pins and that the ground is tied to the ground elsewhere on the board. That would be my next suggestion.

I had a board where I needed to carefully reflow the header to get the light working right - and another spot on the board where the SCR solder pad was lifted but it was not obvious.
 
Well I gave a good look see on the traces and didn't see any broken traces.
I also reflowed the connectors and still have the same issue.
Any other suggestions?
 
If your multimeter beeps on the pin and on the scr leg then I'm stumped. The Baby Pac repair guide talks about 4514 lamp decoders (U1,U2) not usually failing but if you are certain about the SCRs and the traces that might be next. Truthfully I'm just reaching here because we are now officially out of my knowledge / experience zone.

Perhaps someone with more pin experience (pinside) can chime in on this board. A similar model driver board was used in a lot of other games of that era.
 
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