Garage Door Capacitor Test

Testing procedure for capacitors using a standard analog multi meter.

Garage door capacitor test.

Symptoms include the hum of a garage door opener and its failure to start working or the failure of an air conditioner to cool the room. It s an all or nothing test that tells you if the capacitor is dead but it won t diagnose one that is still functioning weakly but about to stop working. If it s very hard to read the information printed on the capacitor then you might have to disconnect the wires and take it with you to make sure you. You can take a quick snapshot with your cell phone or write down all of the information written on the side of the capacitor.

To ensure our content is always up to date with current information best practices and professional advice articles are routinely reviewed by industry experts with years of hands on experience. How to test a garage door opener capacitor written by teresa agresto on nov 19 2010. In my experience the capacitor is the first to go out then maybe the power board or control board. There are a lot of parts that can fail.

Here i am testing a start capacitor and a run capacitor for an electric fractional hors. Garage door capacitors vary on size color capacitance and voltage. 19988a capacitor garage door opener 70 microfarad mfd 220 volts ac vac 60 hertz hz oem upgrade for genie 19988a 19988 and x 19988 a garage door opener capacitor 3 5 out of 5 stars 9 16 39 16.