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I identified oxidation in the u1900, replaced, but there was no result.
PPBUS_g3h 8.59V; pp3v42_g3h 3.42V; PM_SLP_S4_L 3.36V; ALL_SYS_PWRGD 0V; pp3v3_SUS / S5 3.34V; PP5V_S0 5.13.
Back to this post, ALL_SYS_PWRGD is 0.94V when you put R8166 back on the board, replace u7820/c7820 with oxidation, worked for a while, but stopped again. When I remove R8166,ALL_SYS_PWRGD becomes high again.
I'm sorry I left the r6130 missing, I put it on, it worked. But now when you turn it on, after a while the screen starts flashing, it drizzles. I think the memories must have cold welding, what can it be?