lenovo g50-70 motherboard ACLU1 / ACLU2 NM-A271 Rev 1.0 does not charge the battery

[rafsad ck]

lenovo g50-70 motherboard ACLU1 / ACLU2 NM-A271 Rev 1.0 does not charge the battery. In windows it shows that plugin charging but did not charge the battery. Battery tested to another laptop running normally. Where to look for the problem. you can help me. Thanks

[mcplslg123]

Re: lenovo g50-70 motherboard ACLU1 / ACLU2 NM-A271 Rev 1.0 does not charge the batte

What Is the voltage at pin6 of Bq charging ic(AC DET)?? Voltages at PQ309 & PQ311??

[rafsad ck]

Re: lenovo g50-70 motherboard ACLU1 / ACLU2 NM-A271 Rev 1.0 does not charge the batte

pin 6 19v
with out batrry
pq309 output 1.9
pq311 output 1.9

with batrry
pq309 0.9
pq311 0.9

[alfasys]

Re: lenovo g50-70 motherboard ACLU1 / ACLU2 NM-A271 Rev 1.0 does not charge the batte

Do you have any schematic for that laptop?

[rafsad ck]

Re: lenovo g50-70 motherboard ACLU1 / ACLU2 NM-A271 Rev 1.0 does not charge the batte

yes sir

[mcplslg123]

Re: lenovo g50-70 motherboard ACLU1 / ACLU2 NM-A271 Rev 1.0 does not charge the batte

pin 6 19v
with out batrry
pq309 output 1.9
pq311 output 1.9

with batrry
pq309 0.9
pq311 0.9

Voltage are in correct. Check all mosfets in charging circuit. Else try changing charging IC

[meritosari]

Re: lenovo g50-70 motherboard ACLU1 / ACLU2 NM-A271 Rev 1.0 does not charge the batte

pin 6 19v

Check value of resistor PR311 maybe have been open circuit.
ACDET pin voltage between 2.4V and 3.15V, maybe arround 2.6V