Many of you experienced guys have been through the diagnostic of switching a twitchy computer board with one on another machine to see if the problem follows. It's an easy, common sense little trick.
Have you guys ever switched a board and found that BOTH machines are now fine with no more problems? Scratching your head when that happens, but happy nonetheless?
It could be that one of the connecting plugs was just not seated well.
However, it could also be that the micro connectors become oxidized over time causing a not so ideal connection.
So when you switch the boards, you inadvertently "wipe" the pins and sockets, thereby renewing the connection slightly.
This oxidation is not as much of a problem with line voltage connectors such as motor harnesses because the voltage usually will just shoot the power across a slightly oxidized connection. Besides, things like motors are much more forgiving to a slightly diminished connection than a computer board which can often act in bizzare ways.
So the next time you have a computer board that's driving you nuts, consider the connections before you even try to swap the board.
You buy a nice can of electronic contact cleaner and clean your plug connections. Most of these cleaners are very similar to lighter fluid so make sure the machine is switched OFF before you spray any pins, and make sure the plugs are completely DRY before you switch the machine back on.
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Connector plugs and wire harnesses...
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