Sunday 4 April 2021

Three ways to test microwave capacitors


If you need to check the capacitor there are  few different ways to do this but be careful these can be charged with enough energy to kill so make sure you discharge them before and after testing and before handling them or even undoing a bolt on them < discharge them first.


To discharge i use a set of VDE approved insulted pliers to short out the terminals of the capacitor. 

sorry for some reason my camera set to toy mode but they will do lol.

Three ways to test microwave capcitors


So first test is capacitance mode if you meter has it use it its easy and accurate set meter to capacitance mode and connect test leads to capacitors terminal leave it for  few seconds to calculate and then take reading.


Three ways to test microwave capcitors

Discharge capacitor again 


Now if you do not have capacitance mode you can select an high ohms setting on resistance mode 
and connect leads if the capacitor is good the numbers on meter should gradually clime as it soaks up electricity from the meter 

Three ways to test microwave capcitors

Discharge the capacitor again 

This time i use insulation resistance tester similar to the previous test press to test 
reading should go up gradually if the capacitor is good  , see video below for
more information on this process.



Three ways to test microwave capcitors

See the video of this process below 






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