Lenovo 330 no charge Battery

[brain123]

Hello,
Notebook does not charge battery. BQ24780S is installed.
VCC=0V
DCDET=2.8V
ACOK=0V
Charge controller has no voltage

PD201 error?

PR209= 10ohm

[mon2]

Re: Lenovo 330 no charge Battery

PD201 error?

Yes, it must be replaced.

Before you do this -> remove all power -> meter in resistance mode.

Check the resistance to ground of the Vcc pin that is showing the 0v.

One meter probe on Vcc pin; other probe to ground.

The resistance should be high. Concern is why this dual diode blew up on you.

At this time, the dual diode is not passing through the DC adapter voltage to power the charger IC which is needed to boost the gate voltage for the DCin mosfets.