Hi everyone, having LA-E292P on a desk, there was some light corrosion around PU137 (NCP81218) - cleaned with fiberglass pen + ispropyl alcohol. All basic rails are ok (3.3, 5, 1.2, 12 , charging ok), except the VCCCPUCORE, VCCGFXCORE_I, VCCSA. All these are driven by NCP81218 + 3x NCP81382, HIGH state on CPUCORE_ON, but LOW on DRVON which enabled those 3 NCP81382. Tried to connect 3.3V from CPUCORE_ON to DRVON, but measured LOW after this. Resistance between those rails and GND are 6 / 9 / 19 ohms. Any suggestion what else to check. Thanks
Lenovo Yoga 370 LA-E292P no power on VCCCPUCORE, VCCGFXCORE_I, VCCSA
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