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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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"non-captivating" captive nuts
Twice in 2 weeks problems due to captive nuts dropping off and landing in
mains/ 450V supply areas of combo units. These days , when coming across any captive nuts, I tend to wrap some gaffer/duck/duct tape around and 2 pierce throughs, for the bolt - any other ideas? First one due to owner tinkering and not knowing that he'd dislodged an edge wrap-around type one, when he re-fitted in casing. Just replaced th e bolt into free air. This one (apparently) dislodged itself. The type with 2 diametrically opposite tangs that engage in a square hole in the chassis and a square nut floating in the captive part. Can anyone say the following is possible ever witnessed? Unnoticed, bolt undoes , due to vibration and protrudes outwards. Normal handling of the case or knocking in transport, the protruding head of bolt is pushed inwards, releasing the tangs, captive nut then continues undoing, in use, till free. -- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on http://home.graffiti.net/diverse:graffiti.net/ |
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