Mr. Pinball Tip:

If you are having problems with premature failure of the infra-red LEDs used in later Williams games with the opto ball trough, check to see if the inside of the coin door mechanism is coming in contact with the LED PC board. A good slam to the coin door may cause it to hit the ball trough. This has even been known to cause the 270-Ohm resistors to physically break if the door is hit hard enough. This problem happened on Indiana Jones.

Dave Stambaugh

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 2021. All Rights Reserved.