How to test a power cap?

[SmokyBarnable]

Is there a way to test power caps. I read that if they read under 15k ohms then they are dead. Is this a definitive test?

Thanks for any tips.

[Blue Strat]

Are you asking about power supply caps? There's no definitive resistance test. You need a cap tester and even those aren't foolproof.

If the caps in question are over 15 years old, don't test them, replace them.

[brad347]

To test a power supply cap:

First, locate the power supply caps in the circuit and drain them.

Second, unsolder BOTH leads of each cap you want to test.

Observe the polarity of the old cap.

Install a new one in its place observing correct polarity. You're done! :D