Look in your manual and figure out what lamps are out. Could be a general illumination string or a controlled lamp row or column. Lamp matrix may help you. Schematics should also be helpful.

Check J5 on the Printed Power Board located lower left in back box for burnt connector. Also there is a connector that near the door itself left side of head. I 've had these burn up on Lethal Weapon 3.

Check the wires in this connector. Pretty sure I had the same issue and I had a wire or two become dislodged. Sorry for the blurry pic.

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Forgot Sega opened to the right..

They just had to try something different.

I've had to remove the header, clean up real good. Sometimes having to stitch traces with copper wick ( flat braided copper used in desoldering) use a meter to check for proper continuity. New header, molex housing and pins should do the job. .156 is the size for the header and pins.

Do you have soldering equipment and know how to use it well? I wouldn’t try learning on a repair like this.

If you decide to send it out for repair ChrisHibler or Borygard are both great options.

This 100%. Good soldering iron. Destroying your stuff is never fun. Don’t ask me how I know.

G-P-E should have what you need https://www.greatplainselectronics.com/categories.asp?cat=35

I’d replace the burnt pin, the plastic header, and the whole connector. You’ll want the correct punch down tool, don’t use whatever screwdriverish thing you have handy. Inspect the other pins closely. If they have the plating worn off replace all of them.

If you overheat the board trying to desolder parts damage is likely. Be careful. Good luck.

In order to do this properly with minimal damage you need a desoldering pump. Removing the header pins with just an iron isn’t a good idea. And you should replace the entire connector with a molex. The IDC connectors are terrible for GI.

Personally I would replace that idc connector with a molex one.