Jumpering is not a big problem until the MPU's ROM chips begin Max out ROM Memory on the -35/-133 MPU to use 2732 EPROMs. MPU board, J5 will have 33 pins (including the removed "key" pin). Way to tell (besides looking at the silkscreened part number on (remember the -133 is really a -35 board with R113 changed to a diode CR52). MPU board working first before proceeding.Īlso of course, make sure the board being worked on is a AS-2518-35 (or AS-2518-133) MPU That the jumpers are correct for the ROMs installed. If the MPU board is jumpered incorrectlyįor the game ROMs installed, the diagnostic LED light will stay It is EXTREMELY important that you have a working MPU boardīefore you change any jumper locations! If the MPU boardĬurrently has ROMs in it, get it working first before playing Important: Before you Change any Jumpers!! When things don't work: -35/-133 MPU Game ROMs, EPROMs, and
#Bally pinball repair driver
Lamps: Locked-on or Not Working Feature Lamps (Lamp Driver board).Coils: Locked-on, Sporadic, or Not Working (Solenoid Driver board) including Flipper Coils.Converting a -133 MPU (Baby Pacman) to a -35 MPU.Stern M-200 MPU Jumpers (using a Stern M-200 in a Bally Game).Game ROMs, EPROMs, and Jumper - the Basics.Fixing the MPU (LED flashes and the such).Upgrading the Voltage Regulator/Solenoid Driver Board.
Removing the MPU Battery and Fixing Corrosion.Fuse Values/Usage & Power Supply Power Distribution.Suggested parts & repair sources web page. Or just want to buy a restored game, I recommend seeing the If you aren't up to repairing pinball circuit boards yourself or need pinball parts Will NOT repair your circuit board after it has been unsuccessfully repaired ("hacked"). These pinball repair documents have been available, repair facilities are reporting aĭramatic increase in the number of ruined ("hacked") circuit boards sent in for repair. Which goes over the basics of circuit board repair. YOU SHOULD NOT TRY TO FIX YOUR OWN PINBALL GAME!īefore you start any pinball circuit board repair, IF YOU HAVE NO EXPERIENCE IN CIRCUIT BOARD REPAIR, Updates of this document are available for no cost at Games use nearly identical electronics, these games This document is a repair guide for Bally electronic pinball The Wayback Machine - Support this Pinball Repair Website & PHoF.
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