Mr. Pinball Tip:

One way to test Bally solid state solenoids and their drive transistors is to attach a test clip to ground and then use the other end of the clip to ground the large metal tab of each transistor you wish to test. In some ways this is easier than using the test button on the front door. It makes it easy to retest a specific solenoid, and it helps you verify the correct transistor.

This technique does you no good if the transistor is bad, the solenoid is bad, or the connection to the solenoid is bad.
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, or by email form.
Go to: Home page, Photo Gallery, Classified Ads, Repair Tip of the Day, The Pinball Collector Register, Advertisers List, Site Map
© Copyright Mr. Pinball 2017. All Rights Reserved.