That is very strange. You might have a short somewhere in playfield switch matrix, but the outhole switch is separate from matrix. Does the game score bonus and increment "ball in play" when outhole coil activates?

Check and clean all board connectors, they are major cause of system 1 troubles. You might need new connector pins installed.

Promoted items from Pinside Marketplace and Pinside Shops!

From: $ 2.99

Tools

The World’s Most Affordable Molex Pin Remover Tool .100 .156

The Pinball Scientist

$ 89.00

Electronics

Gottlieb System 1 Driver Board - LISY Development

That Old Pinball

1,999 (OBO)

Machine - For Sale

Totem

Ajax, ON

idobson

Hey modders!

Open a free Shop and start selling on Pinside

Your shop name here

You're currently viewing posts by Pinsider tuukka.
Click here to go back to viewing the entire thread.

Reply

Wanna join the discussion? Please sign in to reply to this topic.

Hey there! Welcome to Pinside!

Donate to Pinside

Great to see you're enjoying Pinside! Did you know Pinside is able to run without any 3rd-party banners or ads, thanks to the support from our visitors? Please consider a donation to Pinside and get anext to your username to show for it! Or better yet, subscribe to Pinside+!

This page was printed from https://pinside.com/pinball/forum/topic/gottlieb-system-1-mpu-switches?tu=tuukka and we tried optimising it for printing. Some page elements may have been deliberately hidden.

Scan the QR code on the left to jump to the URL this document was printed from.