regarding getting mild electric shock in my new (one day old) “microsoft surface pro”

hi
I'm not a professional in this field and I'm just consumer who brought a brand new device worth of more than 1000$ being a student and being worried due to the fact that I'm getting a mild electric shock(just like a ant bite)
Scenario:- when this problem first arose in my brand new surface pro device, I had reported it to the Microsoft and they said it is not usual and replaced my device. just one day before I received a brand new device guess what the same issue. i.e. I'm getting mild electric shock while charging (usually used continuously for hours and when charged upto 70 to 85%)when contacted with the metal body of the Microsoft surface(it is continuous shock and  it will give me shock even while wearing shoe)
Remedies took as a customer:- 1]checked the voltage output:- it is proper as per rated
2]check for grounding :- properly the circuit board is grounded
3]just to make sure i have even replaced my socket with a new one.


the question in the forum:- my question is that 1] is there any defect from my end in terms of electrical power input and if any kindly tell me a way to check it.
2] kindly tell me a method to measure this leakage current. so that I can measure the current and tell to them.
information:- the power cable of the Microsoft surface pro is two pin.


( I'm sorry if the question asked is not suitable to this forum)

I would suggest that you retain an accredited electrician to look at your house and supply wiring.
The tests that would need to be performed such as supply earth bonding and checking the polarity of supply to the house , need to be done by someone with knowledge and the tools required.A quick suggestion would be to take surface pro device to a totally different location and plug it in to the power supply at the new location. If the electric shock persists in this new location then the surface pro uint and powers supply would seem to be at fault. Not knowing your geographical location a further question might be asked? Is there an overhead power cable or heavy industrial machinery close to you when you get the shock? Do you get a shock when the surface pro is on battery supply and not connected to the mains?Sorry I can not answer the question any further.

I'm from country-India and state-Tamil Nadu, we are having the tropical rainy climate.their is no power cable or heavy industrial machinery close byI stay in amrita vishwa vidyapeetham, It is a university and I have checked in many sockets inside the university and I'm getting the same issue.i do not get any shock while using on batteryMy circuit board of the place where i stay is properly grounded and other devices like laptop work just fine without any shock. even this device work fine. but after reaching 70 to 85% charge it starts to give shock.
can you please tell me how to check the polarity of the supply and what kind of instruments needed for the same.
thank you for your response

Hi Sidhanth-What else are you in contact with when you receive the shocks?  It could be that the leakage is coming from another source.If the power cord is two pin, then there will inevitably be a small amount of leakage.To measure this, take a multimeter and set it to the AC Microamps range.  Place one probe on a metallic part of the Surface Pro and put the other probe in the ground pin of an AC receptacle. The screw that holds the cover on the receptacle should also be grounded. Have you received shocks from other electrical items?  A few people have a condition known as Electromagnetic Hypersensitivity and are EXTREMELY sensitive to electric fields.  Some of them claim to feel the field that surrounds fluorescent light bulbs and cellular phones. Some people are so sensitive to these fields that they have had to move to "RF quiet zones", such as the areas around radio telescopes.  I hope you are not affected by this.-Rick

If as you say you have the the 2pin type  of socket outlet then I would follow Rick's advice below.
If it is of the 3 pin type I would suggest you invest in a mains wiring socket tester of  good quality which is designed for your socket type. It will not fully test to a required British Standard Installation requirement but it should allow you to check that the socket is not wried in a manner that is hazadous.Looking at the reviews on Amazon shopping site, it would appear that non Microsoft power supplies whilst looking identical have  a very poor life expectancy days or months.Could it be that the power supplies you are being sold with the Surface Pro are a cheap copy?Mike

Does the Surface Pro use an external charger? If so, the leakage problem is in the charger, not the Surface Pro.

Hi ,Sidhanth. 1.If your mains cable is a two pin type  reverse your two pin connector and check for leakage using a line tester. your gadget will be using an smps power supply and most of the cases it willhave a floating ground and it will be live usually more than 150 v ac and from this point some polyster cap of high voltage 2kv ,3kv are connect to the chassis ie the real ground if these are slightly leaky it can give a mild shock. so reverse the polarity of your plug and try. if the cap is fully short your system fuse will blow off or it will damage your gadget power supply.if all of this fails  go to a transformer  winder and order a    230v   1:1  transformer 100 watts and connect the mains in put to the transformer primary winding  and the secondary winding to your gadget in put , your problem will be solved 100%.  the wattage of  the transformer should be rated 40 percent above your gadget  requirement for more safety i think 100 watts will be ok  for your purpose. pl get back tome with your results it will help every one.