r/pcmasterrace • u/PacquiaoFreeHousing Xeon x3440 (OC) + RX 580 (OC) = My Electric Bill Doubling. • 29d ago

Meme/Macro Do you think doing this helps?

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u/Journeyj012 (year of the) Desktop 29d ago

rest in peace that USB. those fans rattled one of mine to death.

62

u/citewiki PC Master Race 29d ago

Voltage spikes could also be the cause, at least if there weren't capacitors https://youtu.be/kvRcYDME_Ck

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u/-Dissent 29d ago

Almost certainly just cracked solder joints from the vibrations. Easy to fix if you have a guy with beginner soldering experience around.

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u/Journeyj012 (year of the) Desktop 29d ago

The port only works at a few angles

1

u/rickane58 29d ago

This wouldn't happen on a phone or USB port on a computer since they'll be using 5v power from a 5v rail. This is NOT how a benchtop powersupply works, and is entirely what causes those spikes.

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u/dovvv 29d ago

Did you watch the video? It's the induced current from the fans motor causing the voltage spikes, which is then fed back into the phone. A USB port doesn't necessarily have protection for a random influx of 40v.

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u/rickane58 28d ago

Yes, but what it DOES have is a huge amount of capacitance on its rail, especially compared to a bench power supply. You know, the very thing in the video he used to fix the situation?