Did you check each fuse with your meter ?

Did you measure AC GI power and see if it leaving the board ?

That can help you get pointed where power stops and what to do next.

LTG

Go to walmart and buy a sub $10 meter. It will be plenty fine for basic voltage/continuity tests.

However, if you want to make a voltage tester, just take a known good bulb and solder two wire leads to it...One on the bottom and one on the side. Make the leads long. Then ground one of the leads and you can start testing the GI wires with the other lead. If the bulb lights you have voltage. Don't touch it to higher voltage (solenoids) or you'll get a nice bulb flash as it burns out.

Start at the fuse, then the connector and work your way through to the playfield.

He no have

which pin? If it's more than 20 years old, my guess is a bad IDC connector (lots of pins in that era over-drove the power, so connectors get stressed). Heck, it might not even be bad, sometimes the pins get loose. GI lighting is usually pretty clearly marked on the CPU

+1 on that, I just did this fix, check the GI connectors for any signs of being burnt, check the back of the board for any cold solder joints.

Also you should check ALL of the GI fuses, I thought I checked the right one and I had not.

Also like robertmee said go buy a cheap DMM, I have the cheapo one and works fine, should be less than 20 bucks. Make sure that it tests continuity.

When you check the fuses remove them to do so.

I misread that, I thought he'd posted "with a multimeter".

LTG

Light bulb ( #555 or #44 ) and a couple wires. Two wires to bulb, one wire to hot one wire to common leaving the board.

With your wires and bulb, stick a battery in there and another wire to make a simple circuit to light the bulb and then put a fuse in line with it, if the bulb lights the fuse is good.

LTG

clever!

Those twist sockets often times the small contacts become distorted or lose their position. Pull the socket and make sure the two small contacts on either side are in position and spread them out a little to make good contact with the board. Same thing with the bulb that goes into them. The bulb has two small wires that make contact with the inside of the socket. Spread them out a little too.

Besides robertmee's advice.

Reflow the solder on the pins the connector plugs onto. Common problem vibration and gravity hurt the solder joints.

LTG

could be sounds like you problem is definitely the connector. if it goes out again take a look at those connectors for any dark discoloration that is a sign of being burnt. Also check the back of the board and check the solder joints where those connectors are. Its an easy and cheap fix if either of those things happen.

damn beat me to it by 16 seconds.