I have been tasked to eliminate the defect of shorts on PWB's. Other than the obvious etch defects, what are some causes of shorts that other companies have seen ? Could the raw material be part of the problem ? Could the defect be "buried via" related ? I would appreciate any inputs or thoughts on the subject. Thanks in advance, Rick Haynes Process Engineer Texas Instruments e-mail [log in to unmask] phone 512/250-7823