Lenovo Thinkpad W541 Wistron LKM-1 WS MB 12291-2 Works from the network and charges the battery only when it is turned off.
If you press the power button, the laptop turns on and works from the battery, but does not take power from the power supply.
If you boot into Windows and close the lid while working, thereby putting the laptop into sleep mode, the laptop begins to charge the battery.
even checked it this way: I bring a neodymium magnet to the Hall sensor during operation - the screen goes out and the battery starts charging.
Also, the laptop does not turn on without a battery, there is a reaction to the button, the fan starts spinning and immediately turns off.
It turns out that in order to use the laptop, you need to charge the battery in the off state and then work from the battery.
There are 2 laptops with this problem.
Maybe someone has encountered a similar problem. Which way should I look?
I installed new power connectors, it doesn't help.
If you press the power button, the laptop turns on and works from the battery, but does not take power from the power supply.
If you boot into Windows and close the lid while working, thereby putting the laptop into sleep mode, the laptop begins to charge the battery.
even checked it this way: I bring a neodymium magnet to the Hall sensor during operation - the screen goes out and the battery starts charging.
Also, the laptop does not turn on without a battery, there is a reaction to the button, the fan starts spinning and immediately turns off.
It turns out that in order to use the laptop, you need to charge the battery in the off state and then work from the battery.
There are 2 laptops with this problem.
Maybe someone has encountered a similar problem. Which way should I look?
I installed new power connectors, it doesn't help.
O.k. then… unplug the power supply from the main board and put in a full size ATX PSU (yeeeesss! Exact that blown Powerman IP that I fixed a while back), plug it in and the old...
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