Hello.I have two Lenovo Ideapads 320 with the same problem.
NO voltage after first mosfet. after replace first mosfet have pulsing voltage around 3.5V after first mosfet, but still no charge or power. i replace charger ic BQ24780S but nothing changed. but when i connect GOOD battery everything works. when battery not connected or connected BAD/low voltage/ batery i have no power.
When i short first mosfet just for a while everything works even without battery until charger remove
i measured that almost everything works but have no ACDRV/pulsing to 3.5V after mosfet replace/, no ACOK without battery
pu301
pin28 vcc 19v ok
pin6 ACDET 2.8v ok
pin5 ACOK 0v ok
pin3 CMSRC 0v/pulsing to 3.5V after mosfet replace/
pin4 ACDRV 0v/pulsing to 3.5V after mosfet replace/
pin24 REGN 6v ok
i see MANY of these model with same error. have somebody some ideas?
NO voltage after first mosfet. after replace first mosfet have pulsing voltage around 3.5V after first mosfet, but still no charge or power. i replace charger ic BQ24780S but nothing changed. but when i connect GOOD battery everything works. when battery not connected or connected BAD/low voltage/ batery i have no power.
When i short first mosfet just for a while everything works even without battery until charger remove
i measured that almost everything works but have no ACDRV/pulsing to 3.5V after mosfet replace/, no ACOK without battery
pu301
pin28 vcc 19v ok
pin6 ACDET 2.8v ok
pin5 ACOK 0v ok
pin3 CMSRC 0v/pulsing to 3.5V after mosfet replace/
pin4 ACDRV 0v/pulsing to 3.5V after mosfet replace/
pin24 REGN 6v ok
i see MANY of these model with same error. have somebody some ideas?
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