Purchased off KLOV as a spare and training board Replaced 7905 voltage regulator on the ARII board.Replaced 555 timer which fixed the -30v.Replaced 7815 voltage regulator for +15v.This board repair was covered here: Working on the electronics. Sound issue where it cut in/out at weird times.Board Zero – The Origin Story:īoard Zero was the board that came in the Centipede machine I’ve been restoring. There are merits to each of these – For the moment – using a logic probe is going to be the best way to figure out how boards work in general and once I’ve strained it to the point where its not enough – I’ll think oscilloscope. Guys who break out a Fluke and Oscilloscope as their first step and map everything along the way.Guys who probe through the board and fix them with reasonable success rates.Guys who just start replacing parts without much diagnosing.After watching hours of videos with different people and different techniques – I’ve seen three types in general: My first attempt at repairing a PCB is how I determined my approach to triage and setting a baseline for repair. Log of Centipede boards repaired to date:

Centipede arcade game