New! Dark mode!

Browsing Pinside at night? Getting tired of all the white? Switch to dark mode using the button in the top right (or CTRL-B)!

(Topic ID: 94561)

Knocker "sticking" on Gottlieb EM


By njPinWiz

6 years ago



Topic Stats

  • 2 posts
  • 2 Pinsiders participating
  • Latest reply 6 years ago by DirtFlipper
  • No one calls this topic a favorite

You

Linked Games

#1 6 years ago

On a Gottlieb Bank Shot (add-a-ball), when the score is achieved to award a WOW, the knocker sounds & then gets "stuck"...humming noise occurs. When ball drains, the knocker returns to rest position. Interestingly when a WOW is awarded for anything other than score value the knocker functions properly. Any ideas as to what might be causing this "sticking" and what is the solution? Thanks.

#2 6 years ago

yes, there are two different paths to the knocker; one is via Wow relay (D), and the other is through the Ten Thousands score reel unit.

On the 10,000's path, it looks like there's a normally open "10,000's Isolation" switch that needs to open to release the knocker coil. So I'd guess that switch isn't opening, so that when the score level matches the setting to achieve a Wow, the knocker coil remains stuck on.

Promoted items from the Pinside Marketplace
From: $ 18.00
Apparel - Men
Pinside Shop
$ 169.95
Cabinet - Sound/Speakers
Pinball Pro
From: $ 50.00
Gameroom - Decorations
Pinball Art Prints
$ 30.00
$ 48.00
Cabinet - Other
ModFather Pinball Mods
$ 15.00
Cabinet - Decals
ModFather Pinball Mods
$ 28.95
$ 5,899.00
Pinball Machine
Little Shop Of Games
From: $ 20.00
Apparel - Unisex
Pinball Wheezer
$ 79.99
Cabinet - Armor And Blades
PinGraffix Pinside Shop
$ 66.00
Playfield - Plastics
Ramp-O-Matic
$ 79.99
Cabinet - Armor And Blades
PinGraffix Pinside Shop
$ 29.00
Playfield - Toys/Add-ons
The MOD Couple
$ 18.95
From: $ 42.00
Cabinet - Shooter Rods
ModFather Pinball Mods
$ 29.95
Gameroom - Decorations
Pinball Photos
$ 175.00
Lighting - Interactive
Professor Pinball
$ 395.00
Playfield - Toys/Add-ons
M&M Mods
From: $ 0.80
Playfield - Other
Rocket City Pinball
$ 5,899.00
Pinball Machine
Gulf Coast Pinball, LLC
$ 999.00
Pinball Machine
Mircoplayfields
$ 7.90
$ 27.99
$ 86.95
Cabinet - Shooter Rods
Super Skill Shot Shop
$ 200.00
Lighting - Interactive
Professor Pinball
$ 29.95
Playfield - Toys/Add-ons
ULEKstore
$ 5.00
Cabinet - Other
UpKick Pinball
From: $ 50.00
Gameroom - Decorations
Pinball Art Prints
From: $ 40.00
Various Novelties
Pinball Photos

Hey there! Got a moment?

Great to see you're enjoying Pinside! Did you know Pinside is able to run thanks to donations from our visitors? Please donate to Pinside, support the site and get anext to your username to show for it! Donate to Pinside