WOZ power supply board defects

This is one of those repairs that reveals something… in this case a manufacturing defect.

My WOZ started smoking one night and then stopped working. After examination, we found this..

What apparently happened was a choke/coil on the power supply board overheated and failed, taking out miscellaneous other components with it. This happened around the same time I did a new software update, so I was concerned it might have been triggered by software, but upon further investigation, this was not the case and just a coincidence.

Upon talking with the folks at JJP, they are aware of the problem and it’s a defect in the power supply board, using an under-powered choke.  Supposedly they fixed this but some games got out with the old choke.  It’s not a question of “if” it will fry, but “when.”  What’s worse is, if this goes out, it apparently has a tendency of taking out numerous other boards including the CPU and the display driver board.

New and old boards

You can see the difference in the size of the choke on the newer (left) power supply board verses the older one (on the right).

Unfortunately, for many of us, the game is likely to be out of warranty by the time you find out you have the old board.  You should check and see, and contact JJP before it costs you much more.  They may replace boards even if they’re out of warranty.

Announcing Pinball Showcase videos!

I’ve gotten a lot of inquiries from people who want to see more information about individual pinball machines and gameplay, and to be honest, that’s exactly the excuse I need to take some time and actually play and appreciate the games. I tend to get so bogged down in repairing things that I don’t play much these days, so I’ve decided to launch a new video series called, “Pinball Showcase” where I go through a game in the club collection and talk about all aspects: the design, art, gameplay, rules, history, and provenance of this particular machine. I hope you will enjoy it – and bear with me as I iron out the kinks of this new pinball recording rig. You can also follow me on Twitch.tv at www.Twitch.tv/mystickrewe

PBH Update: new games and videos coming soon

I apologize for not posting as much lately. There have been a bunch of things going on, but I have picked up more games and hope to do more videos on “first looks” as well as “how to” for various things. pb3

In the past few months much of my work has been dedicated towards getting the new space operational and doing PR for our club, the Mystic Krewe of the Silver Ball. An fans of PBH that want to support our club, visit the web page www.MysticKrewe.com.


Recently several new games have come in, including: LW3, Slick Chick, Vector, and a bunch of old playfields that we are trying to figure out what to do. A few games have come in that might not be salvageable — we shall see. And we have a bunch of pieces-parts that we want to try and do some creative things with… stay tuned for more videos!