Re: lenovo b470 turns on only on battery
ok i try to removed pq4002
ok i try to removed pq4002
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Re: lenovo b470 turns on only on battery
removed pq4002 plugged both charger and battery pin 7 have voltage of 3.3vComment
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Re: lenovo b470 turns on only on battery
Any news ?Comment
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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 CHARGERComment
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Re: lenovo b470 turns on only on battery
If you will reply like this than it will take 2 days to fix itComment
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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 inLast edited by String2016; 05-21-2020, 03:52 AM.Comment
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Re: lenovo b470 turns on only on battery
Do you have WhatsAppComment
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Re: lenovo b470 turns on only on battery
Check pq4001 pin no:- 5 = ?Comment
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Re: lenovo b470 turns on only on battery
pq4001 pin 5 have 3.3v sorry i dont have whatsapp numberComment
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Re: lenovo b470 turns on only on battery
Ok
Check RASISTOR VALUE
PR4002
PR4003Comment
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Re: lenovo b470 turns on only on battery
Stay in touch continue till we fix this issueComment
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Re: lenovo b470 turns on only on battery
pr4002 = 100kohms pr4003= 49.58kohmsComment
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Re: lenovo b470 turns on only on battery
Remove PQ4001and make jumper from pin 3 to pin 4Comment
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Re: lenovo b470 turns on only on battery
Any good newsComment
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Re: lenovo b470 turns on only on battery
ok thanks ill update laterComment
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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 0vComment
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Re: lenovo b470 turns on only on battery
Give ne value of pr4001 rasistorComment
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Re: lenovo b470 turns on only on battery
How come pin 1 is connected to the GROUND
i think you are masure from pin 6Comment
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I got a Lenovo Thinkcentre MT-3218 that when I plug the power cord, the computer turns on. The power button seems to work just fine. When I press it the computer turns off, and when I press it again, it comes back on. But when I unplug the power, and plug it back again, it turns the computer on... does anyone have an idea what might be causing this strange behavior. Could this be the power supply or a bad contact on the power button?
thanks
PS: everything else on the computer works fine -
Hi all,
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I have a Lenovo Legion 5 Pro laptop - NM-D601 REV1.0 when I connect the battery it turns off after 5 minutes of use, if I don't connect the battery the laptop can keep working perfectly, I have already checked the charging voltages and they are fine, no I know if any mosfet is not working well, how can I know?
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