The problem is,with curcuit boards, there may be another layer of ciruits imbedded in the board itself,underneath the surface layer, that may be damaged.Not shure if this is this case,i have never seen one up close.Just a thought as to why you see no damage.
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 Old Works Motor.
Malcolm and my Wheels, 1998 V70 2.5 20 Valve Auto Classic,Unmodified.
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