It's Monday... had your coffee yet? I'm trying to gather together some potential solutions to High Voltage breaking over and arcing between traces on board. The things I know contribute to this are things like, too little spacing between traces on the surface or in the inner layers, sharp points on traces, board cleanliness or the presence of contaminants between the potential voltages. It was suggested that conformal coating the boards after a real good cleaning might improve the insulation resistance between traces, has anyone done this successfully? Do you have any other ideas short of a re-layout of the board that could perhaps repair a problem like this? Any ideas are most appreciated. Bill Brooks - KG6VVP PCB Design Engineer, C.I.D.+, C.I.I. Tel: (760)597-1500 Ext 3772 Fax: (760)597-1510 Datron World Communications, Inc. _______________________________________ San Diego Chapter of the IPC Designers Council Communications Officer, Web Manager http://dcchapters.ipc.org/SanDiego/ http://pcbwizards.com --------------------------------------------------------------------------------- DesignerCouncil Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF DesignerCouncil. To temporarily stop/(restart) delivery of DesignerCouncil send: SET DesignerCouncil NOMAIL/(MAIL) Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ---------------------------------------------------------------------------------