At 09:45 -0800 3/4/13, Clark Martin wrote:
>
>It may have been that there was simply a bad solder joint on that transistor.
>Replacing the cap may have jostled the solder joint enough to return it to
>working order, briefly.
>
After I retired from launching navy rockets I worked on radio installations in
light aircraft. One day a boat owner with an airplane too told me that ALL
electrical problems in automobiles and boats were caused by bad ground
connections. I was quite willing to add airplanes and rockets to that.
But a corollary is that ALL failures in electronic equipment are caused by bad
solder joints. Responsible technicians have a somewhat annoying tendency to
give a piece of equipment a really hard bump on the side or they deliberately
lift it a few inches and drop it. Visitors tend to think it's like punishing a
child but it often makes something work or at least changes some noise it's
making.
It's a sure sign of a bad connection and it's more likely to be a solder joint
than a bad connector pin.
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