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I will assume 1st that this capacitor is on a PSC motor or compressor. This was not clarified in the question. First, shut off power to the unit. Even if it is bad, the capacitor still may have power stored in it. This power needs to be discharged. A setup using a 10K ohm, 2 watt resistor is commonly used. Just get the two leads of the resistor to come in contact with the capacitor leads. If the cap has 3 leads, just use all combinations to discharge it. Remove and replace the cap with one of the same mfd. rating. The voltage rating of the replacement must be equal to or greater than the one removed. If you can't fiddle around with a resistor, just use a screwdriver. Be aware that there may be an arc if you do it this way Use an insulated screwdriver only!!!!! lc

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Q: How do you replace capacitor of home heating unit?
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