However, does it have PIA Chips 6820 or 6821 on the MPU board? Have you checked those? The MPU needs to send the signal to the driver board thru the PIA chips to fire the solenoids. They are also used to read the switches.

Promoted items from Pinside Marketplace and Pinside Shops!

$ 98.99

Boards

New Game Plan Solenoid Driver board SDU-1

PinballReplacementParts

$ 16.50

Magazines/books

Pinball Magazine No. 1 (Roger Sharpe, IFPA, Pinside, PPM)

Pinball Magazine

$ 12.00

Playfield - Toys/Add-ons

Sharpshooter Apron Cards

UpKick Pinball

Great pinball charity

Bringing the Joy of Pinball to American Children’s Hospitals

Project Pinball

You're currently viewing posts by Pinsider Spybryon.
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/my-gameplan-mpu-2-lives-thanks-viperrwk?tu=Spybryon 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.