Yet another Pac thread

i86time

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I purchased a Pac-Man cocktail on Monday, not working. I replaced all the fuses (there was a 2A in one 5A holder and a 3A slow-blow in a 1A holder) and after some fiddling with the monitor, everything was go. That's when it started having reset problems. It can play fine for 20 minutes and reset or it can boot up and then reset, no real pattern. After messing with it, I think I tracked it down to the Sync Buss card. If it reboots or throws up garbage, I press on it a certain way and it boots back up. So I took off the card and had a look and found this:
DSCF1403-1.jpg


Pin 14 is so long that it actually goes through the pin hole on the rubber riser and out the other side, bending outward the thinner pin on that riser that inserts into the socket on the main board. Even though it appears everything makes contact fine, I can see that the Pin 14 socket on the main board has been widened a bit and may be the source of my problem (fingers crossed). Is there any particular reason that pin is so long, or is that a manufacturing error and I can cut it shorter?

This thing was a true rats nest. Every wire in the P1 control panel had been gnawed on somewhere and some in the main cab had too. I didn't see it when I picked it up, but someone tried to warn me:

DSCF1406-1.jpg


If you can't maike it out it says, "This is mine" signed "the Rat."
 
Well, that was interesting. I did not notice it until I saw the picture up here, but Pin 14 being long wasn't the problem - it wasn't even soldered to the Sync Buss card. For 30 years that pin was just sitting right up next to a solder filled hole. How this thing even worked, I have no idea. I soldered it in, fired it up and wiggled the card - no resets. Time will tell.
 
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