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The Thinkpad charger is not third-world proof, beware. Link to voltage protector to fix problem.

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bwsb
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The Thinkpad charger is not third-world proof, beware. Link to voltage protector to fix problem.

#1 Post by bwsb » Tue Mar 10, 2015 6:31 am

Since 5hrs, my Thinkpad Yoga gen1 does not charge when plugged into the wall. I checked carefully that the charger is indeed plugged in and that there is proper powers upply in the wall.

* Tried the reset button on bottom of laptop.

* Will try unplug battery for some seconds, as advertised elsewhere.

In the worst case, some electronics are fried - am in India where voltage anomalies do happen. I suspected there was one, there is over-voltage protection in the house, and the aircondition was fine.

When I touched the laptop's magnesium chassi on the side however, I felt rather strong electricity, but it seems that I do all the time also now when it's plugged in to the wall, so I guess the charger does work.

Do you have any thoughts/suggestions?
Last edited by bwsb on Fri Apr 24, 2015 4:44 am, edited 1 time in total.

axur-delmeria
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Re: Thinkpag Yoga gen1 not charging, how fix?

#2 Post by axur-delmeria » Tue Mar 10, 2015 10:55 am

It's possible that the charger is faulty. Try a different adapter.
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Re: Thinkpag Yoga gen1 not charging, how fix?

#3 Post by rkawakami » Tue Mar 10, 2015 1:22 pm

bwsb wrote:When I touched the laptop's magnesium chassi on the side however, I felt rather strong electricity, but it seems that I do all the time also now when it's plugged in to the wall, so I guess the charger does work.
To me, that sounds like a typical condition where the AC outlet ground connection is not wired correctly. Either that, or the charger itself has a problem. I would usually recommend reversing / flipping the plug around 180 degrees and see if the electrical tingling goes away but depending on the outlet you have and/or if you are using any plug adapter, you may not be able to do that given your current location.

I would also attempt to measure the voltage coming out of the AC adapter and verify it is within operational limits (i.e., 20VDC).

ref: http://www.worldstandards.eu/electricit ... d-sockets/
ref: http://en.wikipedia.org/wiki/Mains_elec ... by_country
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bwsb
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Re: Thinkpag Yoga gen1 not charging, how fix?

#4 Post by bwsb » Wed Mar 18, 2015 12:14 am

rkawakami, thanks.

Apparently the AC adapter was fried, from voltage fluctuations in this Indian power system.

So apparently you always need an external voltage stabilizer when you're in the third world.

bwsb
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Re: Thinkpag Yoga gen1 not charging, how fix?

#5 Post by bwsb » Fri Apr 24, 2015 4:35 am

My charger was fried, the solution was to get a new one, and get this voltage protector: http://forum.thinkpads.com/viewtopic.ph ... 2&p=754912

Completely awesome. No issues after I got it.

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