Hi i need a little help. I have this laptop where the DC Jack is broke. After repairing that the motherboard won't turn on and does not charge the battery.
I've check some mosfet and capacitors and all that a checked seems ok. I'm suspecting the IC PU21 bq24725A but i'm not shure. I have some measurements.
I've the rails 3.3V and 5V on the jumpers PJ1 and PJ3.
This is my results of the bq24725A with no battery,
1-acn - 19.3
2-acp - 19.3
3-CMSRC - 19.3
4-acdrv - 24.8
5-acok - 3
6-acdet - 2.4
7-iout - 0
8-sda - 3.3
9-scl - 3.3
10-ilim - 0.1
11-batdrv - 2.8
12-srn - 2.8
13-srp - 2.8
14-gnd - 0
15-lodrv - 0
16-regn -5.9
17-btst - 5.7
18-hidrv - 2.7
19-phase - 2.7
20-vcc - 18.9
Are this voltages ok for the IC PU21 bq24725A? If yes, where can i search now?
Thanks
I've check some mosfet and capacitors and all that a checked seems ok. I'm suspecting the IC PU21 bq24725A but i'm not shure. I have some measurements.
I've the rails 3.3V and 5V on the jumpers PJ1 and PJ3.
This is my results of the bq24725A with no battery,
1-acn - 19.3
2-acp - 19.3
3-CMSRC - 19.3
4-acdrv - 24.8
5-acok - 3
6-acdet - 2.4
7-iout - 0
8-sda - 3.3
9-scl - 3.3
10-ilim - 0.1
11-batdrv - 2.8
12-srn - 2.8
13-srp - 2.8
14-gnd - 0
15-lodrv - 0
16-regn -5.9
17-btst - 5.7
18-hidrv - 2.7
19-phase - 2.7
20-vcc - 18.9
Are this voltages ok for the IC PU21 bq24725A? If yes, where can i search now?
Thanks