Aren't a lot of those turrets silver plated? Would silver whiskers tarnish like that over age? I'm just a CAD guy, but that's the first thing that comes to mind... Olav On 3/8/2012 10:39 AM, Goodyear, Patrick wrote: > Ok got a new one. Found on the plated portion of a turret a black fuzz, also on the riveted backside and the plated portions of all of the lands outside the soldered areas. > It cleans right off with alcohol leaves no residue, is crystalline in structure and grows away from the metal has a coral like appearance. > > I have attached pictures but Steve is off today so don't know who else can post. > > Again a 40 year old board. > > Any ideas???? > > Pat > > . > > > ______________________________________________________________________ > This email has been scanned by the Symantec Email Security.cloud service. > For more information please contact helpdesk at x2960 or [log in to unmask] > ______________________________________________________________________ > ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________