phuketmymac
New member
Hello,
That board is missing the CPU power rail but it is in an S0 state.
The CPUIMVP_VR_ON signal is on at 3.3V
Corrosion was worth between R2415 and C2411, on the probe point, rail PP1V05_S0_PCH_VCCDMI_FDI
This rail is at 0V.
That rail comes from PP1V05_S0 which is present at 1.05V
Probe point is gone and I try to dig a small hole to attach a wire and reconnect it to the resistor and capacitor.
It seems that I did it but still no CPU rail.
I've replaced since U7400 as well as Q7510 and Q7520 but no cigar.
One more thing... PPBUS_G3H is at 8.4V but SMC is on. Is that normal on the board?
Thanks!
That board is missing the CPU power rail but it is in an S0 state.
The CPUIMVP_VR_ON signal is on at 3.3V
Corrosion was worth between R2415 and C2411, on the probe point, rail PP1V05_S0_PCH_VCCDMI_FDI
This rail is at 0V.
That rail comes from PP1V05_S0 which is present at 1.05V
Probe point is gone and I try to dig a small hole to attach a wire and reconnect it to the resistor and capacitor.
It seems that I did it but still no CPU rail.
I've replaced since U7400 as well as Q7510 and Q7520 but no cigar.
One more thing... PPBUS_G3H is at 8.4V but SMC is on. Is that normal on the board?
Thanks!