DAG3JBMB8D0 HP 3 times blink

[ahmarzo]

I have hp gaming board DAG3JBMB8D0 the problem is when i press power button dc jack light blinks 3 times white. It has bq738 charging ic i found acdet 2.1v after changing resistor the voltage is 2.8v but same problem. Acok is 3.2v and the board has 3v and 5v.

[mcplslg123]

Re: DAG3JBMB8D0 HP 3 times blink

AD_ID voltage??

[ahmarzo]

Re: DAG3JBMB8D0 HP 3 times blink

Where to check ad id can't find schematic of this model on dc jack i have 19v, brown pin has 0.50 v, and yellow and white pin have 5 v each. Please help how to trace this problem.

[mcplslg123]

Re: DAG3JBMB8D0 HP 3 times blink

AD_ID is brwon pin. Its likely ok at 0.5V but cant be confirmed without schematic.

[Udemzy]

Re: DAG3JBMB8D0 HP 3 times blink

It means low power adapter, check your charging ic requirement.

Ac_ok is going to sio and ad_id should be 0.6v, check if your charging port is fine and not broken too.

[mcplslg123]

Re: DAG3JBMB8D0 HP 3 times blink

@Udemzy, do you have schematic of this board?? How you concluded AD_ID should be 0.6V??