If you Gottlieb System 1 game sometimes freezes and pulls in all its coils,
you probably have a grounding problem. Check and clean the large connector
between the CPU board and the driver board and resolder the power supply
board connector pins. The large connector often gets corrosion on it and
the power supply pins sometimes get cracked (cold solder) joints and neither
get a good solid connection.
New tips are welcome and encouraged. Tips will be credited to those who
contribute. If you would like to submit a tip click
For more information you may contact us by email, email form, or by phone at (801)
277-6296 (voice and message), or (801) 277-0888 (message).