Page 107 - Testing Electronic Components

such as the inverter circuit in LCD monitor.

So the right way to check the ceramic capacitor leakage is to use an
insulation tester. If you have the analogue insulation tester or meter, the
meter panel will show a short circuit when certain voltage are applied to
check the ceramic capacitor dielectrics or materials. The voltages that you
can select is depends on the brand or model you had. Some have the
range of 50v to 1000v and some have the range from 100v to 5000v. It is
optional whether you should have one.

If you have one then it would be an added advantage to you. The other
option that you have is to direct replace the suspected failure ceramic
capacitor. In my country, you can get a new one in less than US150 or
you may bid a used unit from eBay. Sometimes you don’t need any meter
to test the ceramic disc capacitor because the burnt marked in its coating
already proven it has gone through some serious heat or high temperature
and need to be change.

A Kyoritsu Insulation Tester

You may also sometimes see cracking in its body. Ceramic capacitor does
not have polarity and when you need a replacement; get the exact or
higher voltage rating with the same capacitance value.

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