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bakre 03-10-2021 06:44 PM

Lenovo X250 not charging

I have an Lenovo x250 laptop that is not charging, but when I change the volt from 20v to 18v is start charging normally, do any one have an idea?
the bios is updated to last version, i have also change the battery but the same problem also.
I have test the id charger is good and replace ic charger the same problem and replace the SMC the same problem.

Thanks :swords::swords:

mcplslg123 03-10-2021 11:14 PM

Re: Lenovo X250 not charging
Check AD_ID voltage when powered by 20V/18V and observe the difference.

bakre 03-11-2021 03:54 AM

Re: Lenovo X250 not charging
yes it is change to 1,69v with 18 volt but with 20 volt it give 1,44volt.
i try to replace the resistor to make the id volt 1,69v when plug 20 volt but it remain not charging the same problem, the problem it is not the id charger, it is something else.
but when power it with 18 volt the 3,3v it rise to 3,7v, and when i power it with 20v the 3,3v it remain 3,3v.

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