AC electrical leakage from Surface Pro 3! - diyAudio
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Old 5th September 2014, 08:16 AM   #1
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Default AC electrical leakage from Surface Pro 3!

When the power cable is connected, AC current flowing from the power brick on surface pro 3 will cause electrical leakage.

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The voltage here is 240V, enough to kill you.

The orange light from the test pen shows AC current flowing through the whole case!

The power brick has 3 pins plug, but the cord is only 2 pins, that means there is no earth wire into the surface pro 3 power cable. M$ should have made a earth wire into the power brick and grounding the metal chassis.

RMA is useless since a replacement adapter will still have such leakage problem.
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Old 5th September 2014, 08:22 AM   #2
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Just replace the cord then ... problem solved.
If not?
Feel free to trash your cheap PSU of 5$ with free shipping.
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Old 5th September 2014, 10:24 AM   #3
DF96 is offline DF96  England
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What is the impedance of this voltage source? I suspect you are seeing a little leakage current through a mains filter capacitor. At worst you might get a little tingle.

Voltage does not kill; current kills.

However, it is possible that your PSU is faulty so get it checked by someone who understands electricity.
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Old 5th September 2014, 02:20 PM   #4
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Is that a non-contact voltage probe?
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Old 5th September 2014, 03:58 PM   #5
DF96 is offline DF96  England
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Looks like a neon screwdriver, or possibly the modern hi-tech variant with a chip and an LED.
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Old 5th September 2014, 04:24 PM   #6
Enzo is offline Enzo  United States
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And when you leave it plugged in but turn off the device, does it still glow?
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