Please help repair BIOS. All power rails are OK but no display.
No EC BIOS chip UC3
Dell Latitude E5450
ZAM70 LA-A901P Rev.1:0(A00)
Service TAG: BMHKK12...

Tried this, without success, still no EC_ON_5VALW_R

Hi everyone!

I have Lenovo IdeaPad 1 15ALC7 (NM-E541) with no power, board have only LDO 3V and 5V. No EC_ON_5VALW_R from EC (IT8227VG-256CX). If I erase EC controller firmware then got 1.8V and 5V, after that EC get it's firmware from main BIOS and again "no life" on board. May be anyone can help found out the reason?

Main board: NM-E541
S/N: PF4RAVW7

Device is out of warranty, because was liquid damaged.

Need to know what is necessary for EC to bring EC_ON_5VALW_R ON

main BIOS dump attached....