lenovo g50 no display with battery

[chraa47]

hello
i have lenovo g50 board nm-a311 the problem that is no display when i power on from battery i check voltge on pq303 i found 15 volt
when i power from adapter it show display and all voltage are okay
i did change ic bq24737 and bq303 and bq307 that control the gate of bq303 and same problem pls help

[Techtiger]

Re: lenovo g50 no display with battery

Is the MB power up with the Battery? What is the Voltage on PQ308A pin2? Voltage on PD301 pin2?