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.

“Hey Professor!” First Look: Gilligan’s Island

Here’s the first of another multi-part series of stories on some recent game pick ups.   Come look with me as I discover new pinball machines in the wild and take them back to the lair to examine and restore! This was from a lot of about five games I picked up from a company that was going out of business. This was the main game I wanted but I had to get the entire package. Boo hoo. 😉

The Great Switch Matrix Wild Goose Chase!

Here are six videos of an 8 part series of clips I shot this past week while working on restoring a Bally Theatre of Magic game.

What’s interesting about this series is you can really follow along with me as I fumble around trying to figure out what’s wrong. This is an all too common path many enthusiasts take which often leads them back to the beginning of the trail and emphasizes a number of common troubleshooting principals.

At this point, I have a working game except for two minor glitches with switches: An opto in the ball trough is not working, and it’s causing the game to kick balls into the shooter lane when powered up, and the EOS switches on the flippers are not being registered by the MPU. The solution to both of these issues was finally found and may or may not be what you expect. Watch the series to find out!

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).