Hi to everyone.
Laptop brought in windows says: Plugged in not charging. Battery changed by new one, SIO(KBC1126-NU) & Supercharger(BQ24736) changed by new one. BIOS sewed by True and working. Charge MOSFETs changed. any one know where I must Dig? (I found similar schematic and 3rd pin on DCIN(LIMIT_SIGNAL) seems faulty.)

Around the charger. Look for some rust.
Check all resisitors and input mosfets.

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Ремонт асик майнеров в Иркутске.

Around charger?? means supercharge(BQ24736) or DCIN1?

Of course the supercharger. The 3rd pin may also give trouble.. in that case the laptop should say:
The supply is not good bla bla bla .. or something like this.
Pull the pin up to 19V with 20 kOhm resistor to fix the problem.
Or you may make a divider 6,5-7 volts to be more presize.
This will tell the laptop that everything is ok with the supply.
Good luck, bro.

_________________
Ремонт асик майнеров в Иркутске.