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 -
For Badcaps Readers, Please note that I am hopefully going to present this same message to Lenovo to see if they have any insight to the matter as well and figured to share the entirety here for clarification. The System is out of warranty as it is but does have the option to have it extended.
Model Information: T14 Gen 2 (Type 20XK, 20XL) Laptop (ThinkPad) - Type 20XK - Model 20XK0069US
Board: T14 Gen 2 (Type 20XK, 20XL) - Type 20XK.
System Hardware:
Processor: AMD Ryzen 7 PRO 5850U
Memory: 1x 16GB DDR4 3200 (Soldered on Board); 1x Crucial 32GB DDR4...09-08-2025, 10:46 PM -
Hi all,
I have a Lenovo Legion 5 with a Ryzen 7 series CPU and RTX 3070 GPU. My issue is that it turns on and all seems fine except after a few seconds the fans spin up high and the laptop turns off after 34 seconds.
I can get into bios and can even boot and login to Windows however after 34 seconds no matter if Im at the bios screen or booted into Windows it will just turn off.
I have managed to run HWmonitor and the temperatures of the CPU and GPU are fine, I can also touch the heatsync which is warm but not hot.
I have tried a few new bios but exactly... -
I've been using this laptop for quite some time w/o battery. It has Linux installed. Recently, someone sent me a web link in an instant messenger. When I clicked on that link the laptop turned off that instant, before the browser even loaded to open it. Since then it turns off several seconds after I start it up and log into the Linux graphical desktop. I can see the mouse cursor moving around the screen when I draw my finger on the touchpad or move the mouse, and then a terminal window begins to load because the desktop autostarts it from last time, and then I hear a pop from the speakers and... -
lenovo B580 change wifi card after this error "unauthorized wireless network card is plugged in. power off and remove it"
bios dump attached...
Comment