I occasionally like to refer back to this reference I made awhile back and I don’t think I had it posted on my site, but when working on WPC driver boards, it’s very easy to damage traces that connect opposites sides of the circuit board. Here’s a handy diagram of those traces and recommended jumpers to make the board more reliable.
When diagnosing power problems on the WPC driver board, it’s a good idea to check for continuity between these marked traces. This can indicate a blown thru-hole.
I’ve encountered an odd problem with this Stern Walking Dead pinball game. The sound completely went out. But there is not a dedicated sound board. So what do you do? It’s a lot scarier than one would think…. This is part one describing what’s going on and what I’m doing about it…
In this video, I am testing a technique that some have been talking about, using a special gel that will cure under UV light to fix playfield damage. I’m using what’s called “Bondic.”
Note I say “infrared” but I obviously mean “ultraviolet.”
What’s your experience with this product?
This is another in my “Occam’s Razor Pinball Fixes” series. These videos demonstrate the principal of Occam’s Razor, which states, “The simplest solution is the most likely” and we often forget this.
In this case, I couldn’t get Haunted House to start a game.. the fix was significantly easier than what I thought it would be. (And no, it’s not because there wasn’t a ball in the machine.. LOL)
I’m very excited I was able to pick up one of my grail games – an early 80s Bally Embryon. Here is some of my progress.
In the next video, I begin to go over what’s wrong with the game and work on it. First order of business is dealing with flippers – on these Bally games, there are some issues with EOS switches.
Next we move onto dealing with drop targets.
A place that’s been on my bucket list to check out, is a business in Houston, TX called “Electronics Parts Outlet” – located in an otherwise demure strip mall on the west side of Houston, this place is one of the premiere surplus electronics stores in the country. It also has a vibrant maker community around it. Come with me as we explore the isles and the many wonders you can find.
This is an ongoing series of videos showing my progress on rebuilding all the electrical components of a vintage Atari Star Wars arcade game. This includes rebuilding the power supply, the audio power board, the audio board, the MPU board, the display controller, the deflector board, the high power CRT board and other items.
NOTE: This is an ongoing series and more videos will be added to the playlist so be sure to subscribe and turn on notifications to receive updates of more progress.