Response to Hello Scott, when a capacitor goes bad it hums to test this Use an analog or digital volt meter. Both work in essentially the same way and are both appropriate for the job. Set the meter to 1k ohms to begin the test. Touch the two terminals with your ohms meter test leads. The basic check involves touching the test leads twice and comparing the reaction. Touch the test leads to the terminals and then reverse them.The needle in your meter should swing to 0 ohms and swing back to infinity on an analog meter, and should display open line every time that you reverse on a digital meter. If it does, you've got a live capacitor and your problems are elsewhere. If there is no difference the capacitor is dead.

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