Someone that does not know how to properly diagnose, an engine, appliance or computer just to start replacing parts to fix the problem. This may or may not be a good option to make the engine or appliance run. Furthermore it may end up costing the non-schooled technician to spend more money than need be.
I didn't have proper diagnostic computers to fix the car so I became a parts hero and started replacing what I thought was broke until the problem went away.
by White will September 06, 2008