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What's DOS?
Posts: 1
Registered: ‎10-06-2013
Location: Melbourne, Australia
Views: 987
Message 1 of 2

Thinkpad T520 won't charge battery or run from battery power.

Hi All,


I have a Thinkpad T520. It won't charge the battery (% charged stays at the same level) and it won't run from the battery only. If I turn off/remove AC power the computer dies immediately and it won't start up without the AC power plugged in.


The battery is definitely good, it works in another computer.


Is this a problem which I can fix myself? Can it be repaired? Will it be expensive? Will it require a new motherboard?


It is not under warranty.


Thanks, so much SV


P.S. Any suggestions will need to be written in fairly simple terms, I'm no expert Smiley Happy

Community SeniorMod
Community SeniorMod
Posts: 10,037
Registered: ‎01-01-2010
Location: US
Views: 954
Message 2 of 2

Re: Thinkpad T520 won't charge battery or run from battery power.

The problem is the charging circuit on the motherboard. It might be a fuse, but that is soldered to the motherboard, so unless you have a well-equipped repair place with a rework station (not a dealer) they cannot replace the fuse. If it isn't a fuse, it is probably a power transistor, and you are not likely to find someone to fix it. Probably, you will need a motherboard


I do not respond to requests for private, one-on-one help. Your questions should be posted in the appropriate forum where they may help others as well.

If a response answers your question, please mark it as the accepted solution.

I am not an employee or agent of Lenovo.

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