10µF cap in circuit reads infinite resistance with cheap dmm; is it likely/surely blown?
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Replying to @RichFelker
Um, capacitors are supposed to read open-circuit at steady state. Try shorting it out and measure the resistance? You should see an initial low resistance that quickly becomes high. Depending on the amount of capacitance, in continuity mode I sometimes get a very brief beep.
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Replying to @rqou_
Of course I shorted it first. It's in a circuit but powered off.
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Replying to @RichFelker
If it's in a circuit I usually wouldn't expect _infinite_ resistance, but it's also not impossible. What makes you think this capacitor is broken?
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Replying to @rqou_
It's in a USB device that gets detected then errors out when connected, and only component aside from IC that looks like it could have been damaged. Switched to 2Mohm mode and it looks ok now tho...
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Replying to @RichFelker
Hmm, unfortunately I've never had very good luck figuring out why USB devices stop working. I would have expected the issue to be with the resistors on the USB data lines (if the device has any rather than having them internal to the chip).
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Just ordering a new one. Doesn't seem to be any time-efficient way to diagnose/fix the one that seems bad...
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Replying to @RichFelker
Yup, that's usually the solution for consumer devices like this
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