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Appliance repair help and repair parts...

Repair Help for Appliances, Lawn Mowers, HVAC and more

Repair Help for Appliances, Lawn Mowers, HVAC and more

RepairClinic.com is the trusted online store with 1,000,000+ replacement parts and maintenance products for 160 appliance, outdoor power equipment and heating and cooling equipment brands

Repair Help for Appliances, Lawn Mowers, HVAC and more

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Capacitor Testing

*This is the same procedure for checking and air conditioner, refrigerator, washing machine capacitor as well*

With the microwave unplugged, use a metal ( not the shiny chrome type ) screw driver with a insulated handle to short across ( touch both at the same time ) the terminals of the high voltage capacitor to discharge it.

This is a common way to do this....

capacitor

If the wire terminals and wires are coated ( not bare metal) you can use a pair of needle nose pliers with insulated handles to short/discharge across the capacitor.

Set your needle meter to an OHM scale, Example: Rx1

meter

Touch your leads together and 0 ( zero ) out your meter with the adjustment wheel.

With wires off of the capacitor ( write down where they go first! )...touch the cap terminals ( red lead on left and black lead on right )...the needle should move away from the infinity ( probably left side ) and move slightly ( towards the right side ) and go back to infinity...reverse leads and ( red lead on right side and black lead on the left side ) on the cap and the needle should move away from infinity even further and then go back to infinity = a good cap. ( note - some caps have a built in resistor that you may read ).

good

If the meter needle goes all the way over to the right side and stays there = a shorted capacitor. ( refresh page will start the animate picture again)

shorted


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