Hello guys. Got an 820-3115 with quarter fan here. As I'm not familiar with this symptom I'm stuck. Got steady PPBUS_G3H, steady PP3V42_G3H, pulsing DDR Voltage and pulsing PCH VCORE, no pulsing on CPU VCORE though. Replaced RTC chip just in case, still same. Steady 3.3V on PPVRTC. There was a little bit of corrosion near J5100, which I cleaned. Still same. Where should I start?