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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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QMS DRO went flakey
PrecisionmachinisT wrote: "Karl Townsend" wrote in message ... Leaving it on all the time helps too. Indicates possible thermal expansion of a solder joint or component...oftentimes, you can poke around with toothpick or something to locate the culprit. Beware of switching power supplies, they can produce a fairly nasty shock. Hairline thermal stress solder fractures around component leads are fairly common. Back when I helped a friend at his repair business any Sony receivers that came in for repair automatically got a manual resolder at all points (heat and add a bit of fresh solder) as that was by far the most common failure. If you looked under a good magnifier you could see the circular fracture around the component leads. |
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