Exercise caution with what you do here..

I'm guessing you'd like to see if you can fake signals at the .156 header for the plasma displays, as I described in the Pinitech RETROFIT instructions.

As already mentioned, the original plasma displays were engineered with the multiplexing design of the displays in-mind. It may cause damage to attempt locking on a digit with constant current, without any multiplexing happening. Any homebrew or aftermarket display testers should probably follow a similar multiplexing rate as the machines are doing, to avoid any unintentional over-current conditions on plasma / LED displays. Even just in regard to aftermarket LED displays, there's a few using low ohm value resistors on the segments that at FULL BRIGHTNESS are then *fully* dependent on the multiplexing of the machines to be within safe operational limits of pulsed current to the LEDs. Signals faked at the bench and displays at full brightness would damage the LED segments on some of these displays within seconds... burning them out completely or damaging them to the point they only light dimly.

The LED displays I sell were all designed to not drive the LEDs so hard, which is why on my displays you can fake signals at the bench to lock on a digit continuously for testing purposes. Won't work on some other aftermarket LED displays and I'd imagine plasma displays would be in a similar boat of being damaged without multiplexing happening.

Not sure, I haven't actually attempted this myself to know what the minimum recommendations would be for a power supply. I'd imagine Gianfri / Pinball Solutions could make a suggestion and/or comment on what you've selected there since his tester was intended for use with plasma displays. Might also want to ask if the multiplexing is happening at a similar rate as the original machines while you're at it. Regardless, at least his tester is doing multiplexing in some form and will be safer than sending constant locked-on current to the display.

Yep, most of what I've seen people using them for nowadays are novelty desk clocks.

Support these test/diagnostic tools while you can! Many of them go the way of the dodo bird because sales are very low & dwindle to the point of only a few units selling a year at some point. Very difficult then the next time a PCB or material order is needed to take the plunge on ordering more parts in, unless you've got enough people committed to a new batch. Ask me how I know

That's surprisingly quick. What carrier is used? In the US it's $10-15 just to ship a 3oz package out of the country.. rates jump pretty quick as the weight goes up... $20, $30, $50... On the positive side, packages do reach the destination countries quicker than before 2014.. used to take 2-3 weeks or more for First Class International.

Hope you sell a lot more of these Gianfri! Test equipment needs some more love/sales. It's nice that some people make this stuff available even though some of it only sells a handful of units a year. I think being able to make a few suggestions on a power supply like Cheddar is trying out will help it sell too.

Sweet that looks like the same voltage stepper i bought! I tested it could adjust to 180v but never hooked it up to a plasma because i wanted to drive it multiplexed.

Cool! When you get a display fully working, I'm interested in hearing if the digits seem to light brighter than when installed in a game or if they look about the same. From the videos I've seen, it kind of looks like when in single digit testing mode, the digit lights brighter than when it's multiple digits being lit?