It would be bad to wiggle cord while plugged in. I would use an ohmmeter. It's usually at the plug but could be up a ways up. After replacing, make sure you have ground continuity between plug and chassis.
Greg
While technically correct, your instructions are useless for the OP. He does not know how to change the plug so I doubt he has a muliti-meter and knows about continuity.
The fact that it runs for several hrs. before conking out makes me wonder if the problem lies with the motor rather than the plug or cord.
If it goes several hours and stop, perhaps it is something else. If jiggling the cord affects it, then the plug is a likely culprit.
Automatic wiggler is worn out. ^_^
TDD
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