Quoted from Robotworkshop:In that picture there isn't a cap to measure 5V from. You would measure 5V across the large cap on the MPU board when it is plugged in. There should be a small linear 5V power supply off to the left near the bottom if I remember correctly. You could measure 5V there.
If you are measuring the cap on the fuse board in the back of the cabinet that is not the place to check.
One word of caution if you try swapping power supplies. Do not just rely on the color codes to determine polarity. I bought one of these years ago as a non working project from someone. They had tried connecting a 5V switching supply but they went by the wire color and connected it backwards. That can cook the custom IC's on the MPU.

Quoted from Robotworkshop:

Have you checked the resistors and electrolytic cap for the problem solenoids too? Years ago I repaired a board that was supposedly repaired prior and I found a burned resistor and severely bulging electrolytic cap for one of the solenoid transistors that had been replaced.
If neither sling is firing can you measure the resistance of the coils. Can you check continuity from those coils to the connector and ultimately to the transistors that drive them?
If all that checks out and you have voltage at the coils then it would be time to break out the logic probe. In test when those should fire you should be able to follow on the logic side and see it toggle between high and low as it tries to fire. If you don’t get anything you may have an open on the board. Or you’ll find another IC with a stuck or dead output. Once you get used to working with a logic probe it is really useful to diagnose issues quickly. They are fairly cheap too.

Quoted from PinRat:

Do you mean Take Five?
I got two allied leisure cocktails (Eros One and Star Shooter) late last year and both are already down with me unable to find components I need here in the states. I can only imagine it would be far more difficult for you. At this point I'm just hoping to eventually get them running 100% and sell them so they can be someone else's maintenance problem. Eros One is a pretty game though.
The MPU boards are hard to come by and the flippers have a plastic cam link in them that has broken in two of my flippers and I have no way to get more. The part is listed on flippers.com as out of stock and in an email exchange, they said they have no one who can injection mold more of them presently.
I traded for a Caribbean Cruise last weekend. I don't love the theme, but man this is a fun game to shoot, and being all Gottlieb hardware I don't have anywhere near the maintenance concerns that I do with the Allied Leisure stuff.