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"PPBUS is 8.62 and constantly goes down 8,5, pulsing too."
You didn't mention that before.
If board works with battery, then could be leakage on the input stage.
"No, just plugged magsafe and light turned orange."
3V3/5V MOSFETs got voltage, you've lucky nothing burnt.
"BMON_ISENSE - pulsing to 0-1,2V"
1.2V is high enough to block the SMC.
"17/18 3.3"
Did you check directly between U7100 pins?
Try fake charger, or lab power supply with 60/85W cable.
Must be other SMC sensor involved, if it always starts in SMC bypass.
Can also be SMC, if never gets orange light.
Did you test with correct Magsafe 2 charger?
Post exact voltage for PPBUS/PPDCIN_G3H.
Tried new one. Now i have no green light and 8,18 PPBUS. Do you know if 980 YFC LM4FS1BH 5BB... (original that comes with board) can be replaced by 980 YFC LM4FS1AH 5BB ? Also in PDF says LM4FSXAH5BB