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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Posted to sci.electronics.design,sci.electronics.repair,alt.engineering.electrical
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Repairing mylar cable?
Cable was damaged by melting several (6) traces worth of conductors. It's
part of an expensive controller assembly for which no individual replacement parts such as this are available. Terminated end is under membrane switch panel which is affixed to the front of the controller. Disassembly to reach the other end of the cable would be near-destructive. So I'm resolved to fix it. The best approach I can think of is to scrape away the light protective coating over the conductors (which aren't copper PC, but some painted-on conductive substance) but not scrape too deeply (I've found by experimenting that this is Not Good )c: ) and affix 30 ga wires via conductive epoxy, bridging the damage. I dread this approach because of the fine pitch of the conductors, and not knowing until I've finished each patch whether 1) there remains enough conductor to patch and 2) the epoxy "took". There is about 1 inch undamaged conductor on either side of the damage to effect a connection, so if any one attempt at bridging a conductor fails I can attempt another, if need be. It's going to be rough going, I fear. Any other suggestions? Maybe find source for this type of cable and graft it to the existing one? Sources for these cables? Thanks, -- John English |
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