Hi Technetters! I have received one assembled PCB from production floor which has developed black color spots all over it like chickenpox. Though these dots are under solder masking but it is visible by naked eyes. Can anybody tell about this defect & how to remove? Thanks in advance. Ashok Tiwari Solectron CA ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################