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From my experience, the 24 pin male/male z connector is the most challenging to find.

Nicely done -- See how a bit of detective work gets you to the end.

Also Eddie at: https://pinballleds.ca/

Whenever I have intermittent switch matrix stuff like this, I spend a lot of time just looking at the back of the playfield. See what is close to switch terminals and might touch what it shouldn't. Particular attention to the switches in the row/column that fails. 13.7V is fine for the switch...

This sounds much more promising.

Good progress. Sorry, but a simple component like a capacitor will not cause your symptoms. Look at the WPC circuit schematic and see which LM339 needs to be replaced. Make sure you socket them.

Your planned tests sound good. A 50V short to the switch matrix is a definite possibility. Keep the 50V off the playfield for now. Yes, you can test the switch matrix with a simple diode connected to 2 wires. This is a great way to confirm CPU board is OK. The other way is to put the CPU...

Coming along nicely!

Brent: Are you able to test and repair a Williams Pinball 2000 power driver board? Jim

0.63mA fuse sounds a bit off. I think you mean 0.63A (or 630mA) fuse.

Is yours working?? I did have a parts machine which I shipped to Tim Polzin in Alberta. Since my restores are not quite complete, I don't know which parts will be left over.

They are both complete, and nearly working. The boards have been rebuilt by Tim Polzin. I'm looking to get $2500 each or $4500 for the pair. The old website on these (polzin.ca) is being phased out. I've had much correspondence with Tim Polzin in Alberta who used to support these games...

I have 2 Rotation VIII's.

Ship it from Canada to Australia???

Wayne's a good guy who has been lurking around almost as long as me. (1974)

$19,999.99

That's looks like a woodrail. The coin door for it is a much older type than this is.

I loaned out my camera for a few days. When it comes back, I'll do that.

They're still there. It's just that the inventory listing for them is awkward. If you search for "playfield - Stern" you will find them.

Good find. Looks like they have Monopoly, Simpsons and Elvis. As time goes on, the pool of NOS playfields will shrink. I'm very patient. However, I have adjusted some of my pricing to reflect fairly to these competitors.