Author Topic: Does this Capacitor Look Like it's Ready to Blow Soon? Some sort of dust on top?  (Read 1624 times)

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Offline salilTopic starter

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This is inside of a BESTK USB charging station.  I purchased it on Amazon a while ago and I began to noticed that it was charging devices very slowly.  It turns out some of the resistors for supply the data lines with the correct voltages had burned up.

Anyway, I saw on Amazon that some people were reporting some serious problems with this product overheating, so I thought I'd take a look to see if there's anything else that could be going wrong and I noticed one of the capacitors had what looks like some sort of beige dust on the top.  I asked an electrical engineering friend (very non-practical type :p) but he says there's no way of tell if there's anything going wrong unless I desolder and measure every single one and have a full schematic of the entire product to reference (which I don't).

Anyway, I've circled the capacitor in question, if anyone has any thoughts it'd be great to hear from you.  Thanks.

PS: There are two pictures of the same capacitor (and a neighboring one which does not seem to be physically deformed at all), my phone's flash is obnoxious so it may be a little hard to see everything in one photo or the other.
« Last Edit: August 06, 2014, 02:27:19 am by salil »
 

Online tautech

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It looks VERY suspicious to me.
Looks like leaking electrolyte.
Best it be pulled and tested, then replaced.
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Offline retiredcaps

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Looks like leaking electrolyte.
I agree. It looks like dried up electrolyte.

The vent suggests it might be  United Chemicon capacitor.  If it is a KZG series, they are known to be bad.
 


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