One of the first things you have to do when you get an original Gottlieb System 80 game is deal with their on-board NiCad battery pack, if it has not already been addressed. Gottlieb installed these batteries on the actual MPU board itself and like on other games, it’s a common cause of serious problems with the game. The batteries begin to leak after awhile, releasing electrolytes that corrode the MPU board and the components on it. This can happen even if you don’t see any obvious leaks. The batteries need to be replaced. There are a few options you have to do this: a remote battery pack (3 AA batteries along with a blocking diode to keep them from being charged if they’re not rechargeable batteries), a 2032 lithium coin cell, or my favorite, a 5.5v 1.5F memory capacitor. The memory cap will last the longest and will not destroy any components on the board. It will keep a charge for at least a month or more without power. Here’s a video of me adding this fix to a Gottlieb System 80B MPU
I got a new pinball machine in the other day and one of the flippers was sticking up. In this video series I go over examining what was wrong and how to address it. There are a number of causes for stuck flippers. The most common cause is a dirty or worn coil sleeve. Also sometimes there can be a hang up with the EOS (end of stroke) switch (more common on Bally/WMS than older Bally or Gottlieb games).
This is one of those videos I keep reminding myself that I should make. And it turns out, I did awhile back and didn’t post it. So here it is. A short video about fuses in pinball machines and why it’s important to check them, how to check them, how to determine if they are proper, and how to ID fuse specs. Enjoy!
As I work on restoring another game, I demo my approach towards making the game more reliable and stable by replacing many of the old bulbs with newer LEDs. I also show the difference between the warm and cool white LEDs and how they work.
Someone asked me this question awhile back, what do I use to keep my playfields playing well and I thought I’d do a video on this, talking about the different products and approaches towards maintaining your pinball playfield.