It does not start if I remove the battery and try to use it directly at the outlet. The LEDs don't even light up

Update:
Motherboard: ey515/ey517/ey519/ey520 nm-b702

I forgot to mention, when it starts, the battery appears to be charged (80+%) but if I remove it from the power supply, it drops suddenly until it closes and the orange led lights up (discharged battery) and then the next time it starts it shows me 1%, I ordered a new battery to see if the problem persists..

EC chip doesn't look fried....

Unfortunately, I am only an ordinary user (more than changing the thermal paste and a little software is beyond me). I tested the charger with a multimeter and it gave me 19.5V, I don't know how to test the small components , from the visual inspection, there doesn't seem to be anything wrong.
I found someone with the same problem: post 13 [url]https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-laptops-tablets-and-mobile-devices/bios-requests-only/81034-lenovo-legion-y530-15ich-nm-b701-need-ec-and-bios-files?p=1655993#post1655993[/url]...

Hi! I have a Lenovo Legion Y530 laptop that has started having problems when it's being charged. Sometimes, when I plug in the charger, it completely shuts down and I can't turn it on (as long as the charger is still plugged in), not even the LEDs light up. If I unplug it, it starts up normally. To get it back to normal, I have to leave it off for 20 minutes and then try to charge it again. At the moment, I don't have another charger to see if it is the cause of the issue.

I tried to discharge the residual power, I removed its battery and the BIOS battery, but unfortunately, it didn't...