I was having weird things happen with my Twilight Zone… what was causing the problem? Optos? Switch Matrix problems? Connectors? LOL… nope
Occam’s Razor Pinball Fixes
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Category Archives: WPC-89
WPC game doesn’t boot up? Let’s diagnose this Gilligan’s Island.
You turn on your game and… “BLECH!” that’s what you get? That’s not good. Let’s try to figure out what exactly is happening:
Armed with more information, later on I have some time to pull the driver board and diagnose things further:
Replacing a DMD on Williams Slugfest Pitch and Bat game
I’ve had this game sitting around for awhile and finally got around to looking at it. I shot a few videos awhile back and forgot to publish them, so here’s a useful short video on how to access the DMD in Slugfest. It’s nowhere near as easy as you’d expect as it is in a regular pinball machine.
Pinball Stories #7: Amazing top 5 pinball pickup!
This is one of those pinball pickups that we all dream about. It took me awhile but I finally had one of those experiences. A top-5 grail game, in HUO condition? Way below market value? Sign me up!!
This is also one of those games I’ve toyed with selling on and off because it’s so beautiful and desirable, but so far, we’ve kept it.
Here are some pictures of the game showing its condition:
Dignosing and fixing a dead WPC MPU board (with RAM upgrade)
In this video series, I am working on a client’s “Dr. Who” pinball machine that wouldn’t boot up. It was just dead. None of the diagnostic LED blinks would blink on the WPC-89 MPU board, so I go over the process of how to identify and isolate the problem, then I upgrade the board with NVRAM (non-volatile memory) so that it will never need batteries again.
This is an unedited series of videos showcasing some experiments I have been doing trying to repair damaged pinball ramps for which there are no replacements available at the present time. In this case, I’m working on a Bally Party Zone ramp, using different types of epoxies, plastics and adhesives. See work works and what doesn’t. In the end, I figured a creative approach using laser cut plexiglass tabs which were attached to ramps using two different types of adhesives.
Pinball Flipper Tune-Up: replacing bushings
If you have a wobbly-feeling pinball flipper, there’s a good chance the bushing is either worn or broken. In this two-part video I go over how to remove the flipper assembly and replace the bushings so you can get nice, snappy, flipper action.
This general technique applies to most flipper assemblies with only a few minor detail changes. Some bushings were screwed into the flipper assembly (especially with Gottliebs) and others were connect to the flipper assembly plates themselves (as in later WPC games).