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lenovo b470 turns on only on battery
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String2016
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#21
05-21-2020, 01:48 AM
Re: lenovo b470 turns on only on battery
ok i try to removed pq4002
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String2016
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#22
05-21-2020, 01:56 AM
Re: lenovo b470 turns on only on battery
removed pq4002 plugged both charger and battery pin 7 have voltage of 3.3v
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qayyum786
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#23
05-21-2020, 03:08 AM
Re: lenovo b470 turns on only on battery
Any news ?
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qayyum786
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#24
05-21-2020, 03:15 AM
Re: lenovo b470 turns on only on battery
Ok good put it back PQ4002
And TELL ME WHAT VOLTAGES YOU ARE GETTING ON
PU4001
DRAIN = ?
GATE = ?
SOURCE = ?
AFTER PLUG IN CHARGER
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qayyum786
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#25
05-21-2020, 03:18 AM
Re: lenovo b470 turns on only on battery
If you will reply like this than it will take 2 days to fix it
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String2016
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#26
05-21-2020, 03:48 AM
Re: lenovo b470 turns on only on battery
sorry for the late response on the pu4001 SOURCE have 19v and GATE=19 but DRAIN=0V no voltages on the drain with charger only plugged in
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qayyum786
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#27
05-21-2020, 04:00 AM
Re: lenovo b470 turns on only on battery
Do you have WhatsApp
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qayyum786
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#28
05-21-2020, 04:04 AM
Re: lenovo b470 turns on only on battery
Check pq4001 pin no:- 5 = ?
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qayyum786
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#29
05-21-2020, 04:05 AM
Re: lenovo b470 turns on only on battery
.
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05-21-2020, 04:26 AM
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String2016
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#30
05-21-2020, 04:23 AM
Re: lenovo b470 turns on only on battery
pq4001 pin 5 have 3.3v sorry i dont have whatsapp number
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qayyum786
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#31
05-21-2020, 04:25 AM
Re: lenovo b470 turns on only on battery
Ok
Check RASISTOR VALUE
PR4002
PR4003
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qayyum786
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#32
05-21-2020, 04:27 AM
Re: lenovo b470 turns on only on battery
Stay in touch continue till we fix this issue
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String2016
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#33
05-21-2020, 04:29 AM
Re: lenovo b470 turns on only on battery
pr4002 = 100kohms pr4003= 49.58kohms
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qayyum786
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#34
05-21-2020, 04:33 AM
Re: lenovo b470 turns on only on battery
Remove PQ4001and make jumper from pin 3 to pin 4
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#35
05-21-2020, 04:43 AM
Re: lenovo b470 turns on only on battery
Any good news
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String2016
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#36
05-21-2020, 04:51 AM
Re: lenovo b470 turns on only on battery
ok thanks ill update later
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#37
05-21-2020, 04:53 AM
Re: lenovo b470 turns on only on battery
Ok
Last edited by
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05-21-2020, 05:24 AM
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String2016
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#38
05-21-2020, 06:11 AM
Re: lenovo b470 turns on only on battery
update: @gayyum786 my mistakes of measurements here is the correct measurements on pq4001 6pin chip pin 1=19v pin2=3.3v pin 3 to pin6 both 0v
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#39
05-21-2020, 06:19 AM
Re: lenovo b470 turns on only on battery
Give ne value of pr4001 rasistor
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#40
05-21-2020, 06:23 AM
Re: lenovo b470 turns on only on battery
How come pin 1 is connected to the GROUND
i think you are masure from pin 6
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