Easiest way, SEND YOURS TO ANDREW (BEAKY) and get it fixed properly for a small amount. Andy does all my board repairs, as well as alot of other peoples. Send him a PM (personal message) by cicking on his photo/name etc.

He usually buzzes out all the tracks with a multi meter, plus other various tricks of the trade, as well as very close inspection with magnified lenses etc.

Well worth it to get it fixed by someone with over 20 yrs of experience. Hope it helps.