check the relays for 1000 scoring? what happens to the hundreds wheel?

For future reference when it happens again, check the 1000 Relay in the backbox. The 1000 Relay is the third to the right of the leftmost Relay in the bottom left of the backbox. One of the switches on the 1000 Relay activates the 1000 Point Chime Solenoid and one activates the 1000 point Score Reel Solenoid. The switch second to the right of the leftmost switch in the bottom set of switches - the one with in the yellow circle - is the one that activates the 1000 point Score Reel Solenoid. Cleaning and adjusting that switch will likely solve your problem.

1000_relay (resized).jpg

First, check if the operator adjustable features in the backbox are set properly. The Play Adj. Jack should be set to 'Credit" and the Number Match Adj. should be set to 'On.'

adjustable_features (resized).jpg

Second, check to be sure that the Knocker's Jones Plug is plugged in correctly. Note that the Chime Unit is NOT plugged in for this picture.

knocker_chimes_jones_plug (resized).jpg

Then check to make sure that the Knocker wires are not loose. It just so happens that the Plunger is stuck 'up' on my Big Ben's Knocker - another problem that will keep it from properly knocking. All you will hear is a buzzing sound when the plunger is not in the 'down' position.

knocker_stuck_plunger (resized).jpg

If the Knocker still is not knocking, turn the game on and start a game. Using an insulated tool so you won't get shocked, close the EOS, End of Stroke, switch for the Step-Up Solenoid. Closing the EOS switch should activate the Knocker Unit Solenoid. If it doesn't close when the Step-Up solenoid is activated, adjust the switch. Also, clean the contacts while you are working on it.

replay_unit (resized).jpg

The 'Drum Unit' is AKA the Score Reel Unit. Check here for a picture: http://www.marcospecialties.com/pinball-parts/D-7251

Hello all. I just started working on a Big Ben also, and sometimes, my machine does the exact same thing. The other times, it all resets, but the ball never ejects out. Thanks for the above information, it taught me a lot. I'm going to start a new post about my start up issues.