Dear friends,
I have a problem with MB NM-A271 from Lenovo Z50-70, which can't charge.
There are measured values on IC BQ737 on attached picture, I think there is no problem, but please check it with me. KBC changed for the new one, BIOS and EC flashed, BQ 737 changed as well to be sure, but still not charging at all and charging LED doesn't light up. EC_SMB_CA1 and EC_SMB_DA1 checked on battery and on KBC with osciloscope. Battery changed.
Any advice what to check?
Many thanks.
I have a problem with MB NM-A271 from Lenovo Z50-70, which can't charge.
There are measured values on IC BQ737 on attached picture, I think there is no problem, but please check it with me. KBC changed for the new one, BIOS and EC flashed, BQ 737 changed as well to be sure, but still not charging at all and charging LED doesn't light up. EC_SMB_CA1 and EC_SMB_DA1 checked on battery and on KBC with osciloscope. Battery changed.
Any advice what to check?
Many thanks.
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