https://artoftroubleshooting.com/2014/04/25/the-50-percent-rule-repair-or-replace-revisited/
The 50 Percent Rule: Repair Or Replace, Revisited – THE ART OF TROUBLESHOOTING
Introduction When I first sat down to write about the “repair or replace” dilemma, in the back of my mind there was a vague notion that a simple,...
repair or replacethe 50percentrulerevisited