Checking Capacitor

[Gerald Craig]

I have a capacitor that I think is bad. I have attached a picture of it. I tested it with a dioid test and it shows not short. I think I should get a reading is that correct? Also, where can I get a replacement? I have looked but cannot find it. Yes, I am a newbie.

 

[crutschow]

I tested it with a dioid test and it shows not short.

Do you mean "diode test"?
A good capacitor will look like an open circuit with a resistance check.

You can use a resistor (say 1 megohm) in series with the capacitor and charge it with a DC voltage to check the RC time-constant to see if it's good.

Why do you think it's bad?

 

[Martaine2005]

What’s the main problem?.
That’s an X2 cap. You can remove it for testing purposes and see if the unit functions correctly. It normally fails short circuit blowing the fuse. But not always.

Martin

 

[Bluejets]

It's a mains rated capacitor available just about anywhere.

I'd be concerned you don't know what it is yet you are playing around in mains equipment.

Other than that, a capacitor tester would show it's value immediately.
Most everyday multimeters have a cap test that would cover that cap value range.(105 = 1uF)

As Martin says, remove it to test.

 

[Gerald Craig]

Thanks for the information. Yes, it is good so the problem is something else. I am still looking for the problem. Yes, I am a newbie. Learning from Youtube. Not the best but I don't have time for school right now.

 

[Bluejets]

Best advice I can offer is get yourself a $20.00 component tester.