05/08/2026
Here's a fun one!
Symptom: Whitewater (one of the best games ever!) would always start a game when turned on, but would almost never start subsequent games until you turned it off/on.
After some digging knowing it wasn't the switch or software, it turns out that starting a game requires Bigfoot's rotating head to be in its home position as determined by a switch.
In test mode, we realize that Bigfoot can only go clockwise, and not counter clockwise. Turning off/on the game just so happens to spin him back into position.
Rotating Bigfoot head is controlled by a bi-directional motor board under the playfield. After removing that board, it was immediately apparent what the problem was.
A 25 cent capacitor, now well over 30 years old had leaked its corrosive electrolytes all over the board. Look at how it ate right through the copper traces and even the chip itself.
Many ask. Is it worth repairing these? Absolutely. This board can run upwards of $100 for a replacement. A new capacitor and the chip literally cost $1 total. I will neutralize the leaked chemical, give it a light sanding, repair the missing traces, and install a new capacitor and chip, and test all the connections. Should take around an hour.
How do I prevent this? These 12V circuit capacitors on these auxiliary boards and the main Williams driver board are well beyond their life expectancy. They're a ticking time bomb, and this type of damage is suddenly becoming a common find. It takes literally 2 minutes to replace capacitors like this, and they're super cheap. Be proactive now, and save time and money later.
Have a pinball machine needing repairs, cleaning, rehab, LEDs, rubbers, or perhaps you just want to sell or trade it? If you're in western PA, hit me up!