Lenovo ideapad 110 CG520 NM-A804 lights glow on when pressing power on key and and gets off after pressing power button again but no cpu normal heat and display ....kindly help me to troubleshoot...thank you in advanced
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I have a lenovo ideapad 5 14itl05, board LA-K321P, That will only power up on Battery only, or with battery disconnected and power adapter only. If battery is connected and usb-c power plug connected. It only works on battery and will not charge. I can however force it to charge by connecting the battery from a disconnected state while the power USB c plug is powering the laptop.
Additionally....to add to this strange situation. The usb-c power plug ONLY works to power the laptop on one side when inserted into the boards power usb c plug. If you rotate it 180 degrees, the board gets... -
Hie I have a Lenovo laptop
Lenovo Ideapad 100-14IBY AIVP1-AIVP2 LA-C771P rev 1.0
it's working only on the bench power supply when I put the battery it doesn't power on. when I also use the original charger it doesn't power. the batter Is fully charged, I used another laptop to charge the battery. but when I use a bench power supply it works perfectly
below are my readings
with the original charger only
JBATT1
PIN1 0.22V
PIN2 0.22V
PIN3 0.45V
PIN4 0.45V
PIN5 O.43V
PIN6 0V
PIN7 GND
PIN8... -
Lenovo Ideapad slim 3 not power on after consumer problems is can not on after sleep mode.
And the consumer asked for reinstalling OS.
I reinstalled windows 10 and working fine. After i leave it for updating windows and goes to sleep mode. Now it cant draw any input from power supply.
Motherboard number is GS450&GS550&GS750 MM-C821 REV: 1.0
Check the main power rail for 20v input ok
No amper input from Power supply 0.013a
Mosfet PQ201 20v and 26v ok.
3.3v exist
1,8v exist
5v exist
12v from baterai exist....09-30-2024, 09:42 PM -
Hello.I have two Lenovo Ideapads 320 with the same problem.
NO voltage after first mosfet. after replace first mosfet have pulsing voltage around 3.5V after first mosfet, but still no charge or power. i replace charger ic BQ24780S but nothing changed. but when i connect GOOD battery everything works. when battery not connected or connected BAD/low voltage/ batery i have no power.
When i short first mosfet just for a while everything works even without battery until charger remove
i measured that almost everything works but have no ACDRV/pulsing to 3.5V after... -
Lenovo thinkpad T15 Gen2
Board: NM-D352 rev.: 2.0
type 20W5 S/N PF-3TGB08
Symptoms: pressing power on, fan spins up but no POST, never getting to BIOS.
I already replace bios without sucess. Can someone give me a tip ?
Regards,06-06-2025, 05:33 AM
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