Mr. Pinball Tip:

When replacing batteries in a Bally early solid state machine, you can use 3 regular AA batteries instead of rechargeable batteries. To do so you will need to install a diode so that the machine doesn't attempt to charge the batteries while the game is on. The diode should be on the positive connection between the batteries and the board. The diode should have the banded end of the diode towards the board. This whole setup is assuming you have installed a separate battery holder off the MPU board in place of the original rechargeable battery.
Tip Archive

New tips are welcome and encouraged. Tips will be credited to those who contribute. If you would like to submit a tip click here.

For more information you may contact us by email, email form, or by phone at (801) 277-0888.
Go to: Home page, Photo Gallery, Classified Ads, Repair Tip of the Day, The Pinball Collector Register, Advertisers List, Site Map
© Copyright Mr. Pinball 2021. All Rights Reserved.