Rich, As operators of a 70 person business focused on circuit board repair and rework, we're quite familiar with the Circuitworks products you reference. However we only follow IPC 7721 approved methods, this conductive ink procedure is not one of them. We would most likely follow the foil jumper method to repair this type of defect. You can see our in-house procedure at http://www.circuittechctr.com/guides/4-2-1.htm Jeff Ferry CEO Circuit Technology Center www.circuittechctr.com Chairman IPC Repairability Committee -----Original Message----- From: Rich Lasko [mailto:[log in to unmask]] Sent: Friday, September 01, 2000 10:55 AM To: [log in to unmask] Subject: Conductive and Overcoat Pens Good morning everyone! A little background....I am working with a vendor of ours ( that manufactures the pcb for electronic assemblies) and we have had some issues with small artwork opens in the traces. (The pcb is double sided with dark blue soldermask and has many small traces throughout the pcb which makes the almost impossible to see visually). At this time, the board does not have an electrical test on it. Our vendor has advised us that the root cause of the small artwork opens is either minor dust or scratch on the artwork that happens at their facility. The opens are random in nature but are very difficult to detect with visual inspection. Our vendor has agreed to implement electrical test (which is fine for future orders) but we have approx. (15) fully populated boards that have these artwork opens that need repair. Total of the 15 boards are worth $3000. So.....in order to "repair" the existing assemblies, our vendor has indicated to us that they will be using Circuitwork's Conductive Pen and then the Overcoat pen on top. My questions to everyone are: 1.) Is this type of repair an "approved" industry standard for this type of defect? How many people use it? Is it reliable - long term? 2.) Other than IPC 7711/7721, are there any other documented repair procedures for this type of defect? Any help on this would be great! Peace! Rich ############################################################## TechNet Mail List 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 web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ############################################################## ############################################################## TechNet Mail List 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 web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ##############################################################