Hello all, I know for sure this is not new for some of you but I will deeply appreciate all your advices regarding this problem. Up to now we have some possible causes that are specific for our process: Chip capacitors solderability problem Oven Profiling, as a fact I am using a VIP BTU Oven of 5 Zones Top and 5 Zones bottom. Please help me in this regarding ################################################################ 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 ################################################################