SMD Capacitor
How to Check Capacitors?
In most cases, a capacitor fails due to the deterioration of the dielectric material between its plate.Defective capacitors can have an internal shorted terminals, excessive leakage and degradation of capacitance meter. For an electrolytic capacitor (capacitors with polarity), short the terminal capacitor to discharge it prior to testing.
To test a capacitor, set the multimeter to Rx10 or Rx1K scale. Connect the tester negative probe to the capacitor positive terminal and the positive probe to the negative terminal.
A good indication for electrolytic capacitor shows the meter needle deflecting towards zero and moves back again to infinite resistance position.
For ceramic, Mylar and other capacitor with a capacitance with less than 1.0 uF, the meter will not deflect at all.
A defective indication for an electrolytic capacitor shows that the meter will rest on zero and remain stationary at a point which is an indication that the capacitor is shorted.