Well, here's one for the books... We have two in-circuit testers located next to each other. Last week, during the night, an air-conditioning unit located in the ceiling directly above the testers sprung a leak, dumping a couple of gallons of ethylene glycol (heat transfer fluid) on the testers. (It seems that the occasional condensation from the air-conditioner warranted a plastic sheet be placed under the unit, above the ceiling tiles. So when the leak started, it collected in the plastic until the ceiling gave out!) Now, the questions: 1) The internal circuit boards plug into a mother board, so they can be removed easily. Cleaning the boards in a saponified solution resulted in a white haze on the boards. What might this be? 2) The boards were cleaned, but only half are working properly. We expect some residue is left behind in some connectors. What is the best way to clean these boards? 3) What is the long-term problem expected if residue is left behind? Thanks for your help, ICTless in NY ################################################################ 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 ################################################################