Mr. Pinball Repair Tip Archive
Solid State Tips Adjusting blade switch contacts AM radio = tool An Alternate Crimp Pin Removal Tool Bad solder joints on circuit boards Ball Feed Problems with WMS Opto Trough Bally 6800 weak solenoids Bally early solid state MPU LED blinks 5 times Bally early solid state MPU LED doesn't blink or just stays on Bally general illumination connectors Bally Solenoid Driver/Voltage Regulator Board Test Points Bally solid state standup targets sometimes fail to score Bally solid state weak solenoids Bally SS Molex connectors check Battery-damage can travel along wire harness Battery-damage seems eternal Blow the boards Brightening dim Gottlieb displays Brighten up the playfield lights on Hercules and Superman Capacitor resurrection Changing batteries Changing battery without losing settings Cheap PCB removal tool Cleaning solid state gold contacts Cleaning solid state switches Connector testing problem Dealing with overheating connectors on early Bally games Debugging intermittent problems Diode replacement and substitution Diodes use on coils Display break in Displays don't work Dot matrix display broken lead repair Early Bally solid state battery type for replacement Early solid-state Williams bridge rectifiers Emergency driver board transistors Fixing intermittent, heated up, optocouplers (Solid state switches used on TZ clock and flippers) Fixing slipping belts FREE circuit board removal tool Free play on older SS games Funhouse general illumination blown fuse problem Fuses can save your components or fry them General Illumination failures General illumination not working entirely Gold plated contacts Gottlieb electronics Gottlieb flipper setscrews Gottlieb SS System 80 does not start Gottlieb SS will not start Gottlieb System 1 freezes and has all the coils pull in Gottlieb System 1 main problem Gottlieb System 1 power supply problem Gottlieb System 80 bumper problem Ground yourself, but don't get killed Help identifying off-board connectors IC mounting--cleaning mount holes IC socket poor connection fix IC socket removal IC sockets Identifying resistors Improving Williams Flipper Action Infra-red LED (optos) testing Installing a headphone jack Intermittent failures can be due to floating ground Intermittent Monopoly switch problems Lights dim when solenoid fires Loose IC sockets Lost PCB connector key plugs Main line fuse blows immediately Majority of solid state problems Make your Gottlieb Solid State turbo-charged Minimizing bad displays More Dot Matrix Display Repair Info My Bally MPU LED glows dim and the game doesn't start Other excellent on-line pinball repair guide PCB pass thru and foil repair Pharaoh, Black Knight, System 7 Error Code 8 - not the CMOS Power surge damage Preventing translites from adhering to glass Protect your CPU from leaking batteries Quick check for gas plasma displays Remove batteries before storing Removing Circuit Boards Without Removal Tool Removing Head On Modern Machines Removing PCB components for replacement Resetting high scores Sending boards out for repair Setting games since Twilight Zone to a quarter per play Setting up free play on solid state machines Software bugs can appear to be a hardware failure Solder removal Solid state test bed machines Substituting for gold switch contact points Temperature safe operating range Testing Bally solid state solenoids Testing gas plasma displays and boards technique THE Solution to Bally MPU Corrosion Transporting static sensitive components Turn off solid state games while repairing Use cooler lamps Use only quality sockets Using AA batteries in Bally solid state pinballs Williams CPU Board Revision Level 6 Test Points Williams CPU Board Revision Level 7 Test Points Williams early SS drop target problem Williams G.I. Problems Williams solid state displays a funny number and won't start Williams solid state flipper coil relative strengths Williams sound problems Williams SS displays fade on and off Williams SS driver board power resistors Williams stuck in audit mode Williams System 7 CPU Board self test WMS Opto Ball Trough Problems Tip Archive click
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