Chris Malton wrote:
> However, the problem was that the actuator was just "stuck", and not
> moving at all. Previously it moved if you applied force to the end of it.
I cannot stress enough the importance of an autopsy to determine the
actual cause of the failure. The only way to learn how to design
reliable systems is to break lots of systems *and* then see how they
broke. So, crack the thing open and take a look. You *may* find that
it was solely a mechanical problem (broken widget) or a combination
electrical-mechanical problem (melted part caused by overheated wire) or
many other different failure modes. I can assure you, a lot more failed
devices have passed through my workshop than operational ones. Each
received a proper autopsy to determine the actual cause of failure.
And, it wouldn't hurt to post a picture from the autopsy along with your
analysis on your tank page so that others can learn from your problem.
Frank "Even Dead Parts Deserve Some Dignity" Pittelli
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