Next time you're in the area, come hang out sometime and I can give you an EM repair guide on video, and then we'll take a ride to the Silverball Museum. Perfect new start to the Bronco series so I can stop wincing a little... Serious offer! 13 arcade games and 11 pinball machines to look at, 7 EM. Whenever you're not busy this year man come on down!

Your son obviously heard the Tito's rant and got offended

I agree it sounds like you might be measuring the 100V AC with the DC setting, possibly.

If you're getting 5V it frankly doesn't matter if the AC can't be read (which I would say is a meter problem) because that AC is an input for the other voltages, not an output. It is what makes the entire power supply be live and "power up", so if you're getting a 5V reading correctly on the 5V terminal, it sounds like you're fine with the input voltage and that the problem might lie elsewhere. Try testing the 5V on the PCB which can be done by going to the edge of the board and following the 5V trace to a chip or other good test point and see what you get there. The ground on the power supply can still be used or the ground on the board could also be used and is likely a better solution to test that as well if you're getting nothing.

Also definitely test the -5V pin on the game PCB board for voltage and since you're already getting less than 5V off of the power supply, it only gets lower as it goes to the board and you'll need to adjust the output voltages using the knob (if there is one) on your switching power supply. This adjusts the 5V voltage and basically takes all of the other output voltages "for a ride". Make sure they're not too high to too low as you're doing this as well and I would suggest adjusting the power supply with the game board unplugged from the harness edge connector, but you do not need to take any wires off of the power supply.

Goonies II?

Also, everything back then was skill based. Now a lot of things are story based with less opportunities to die to lose in a game, and most games today have infinite continues and save points.

https://www.youtube.com/watch?v=x19AptrB5So

, wow, first time seeing this

Welcome, Stefan!

Enjoy your stay!

Nice job! Was going to bash on the XArcade stick, but aside from probably being pretty flimsy or broken easily (or so I've heard), you mounted it very very nicely.

Enjoy it all, man! Cool build of it.

Oops, I spilled 'em.  

They might be watching Johns year end video.

Wouldn't be surprised, first Mark Wahlberg, now Kim Jong-Un and his crew he forces to watch with him.

"HEEEEEEEEY GUYS, AND WELCOME TO ANOTHER JOHN'S ARCADE ONNNNN THE ROOAAAADDDDDDD, TODAY WE'RE HEADED TO MY BUDDY KIM'S COUNTRY TO CHECK OUT HIS ARCADE, LET'S GET GOING"

10 years of exposure to weather, and probably quite bad weather too? I don't even know if I'd trust the parts or boards, let alone the cabinets. 

Just don't hurt any classics along the way, Rush N Attack

That's a board / conversion only game

They don't have an internet infrastructure, it's all on our side (well, USA) but they're accused of the attacks

Maybe a darker color? I'd say something like dark purple / plum color but it probably doesn't sound too appealing. Light light green? Blue?

Check the edge connector, might be a grounding issue or a connection issue.

Pole Position?

Oops, yeah, something like that. Definitely seems racing-esque.