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Good afternoon mates.
The board is already manipulated (traces of flux) and there're no traces of liquid:
- PPBUS_G3H: 12.53 V
- PPBUS_HS_CPU: 12.53 V
- PPBUS_HS_GPU: 12.53 V
- PP3V3_G3H: 3.0 V
- PP5V_S5: 4.99
- PP3V3_S5: 3.3 V
- PP3V3_SUS: 0V
- PP1V8_SUS: 0V
- PPVCC_S0_CPU: 0V
The macbook had liquid damage around U7000, it was changed for a donor but, there are problems in power on.
When I try to turn it on, it marks me as having no battery and after 15-20 minutes of letting it charge, it turns on with + 50% battery. The failure is random since...
Finally, I have been able to solve it thanks to 2informaticos.
There was no communication between R7151 and R7150: I jumper and it starts, but the fan turns at maximum; I run an ASD and it tells me there's a problem with the fan but nothing else.
SMC replacement (had replaced 3 before) and...
I got an 820-3476 that did not turn on: ppbus gave 0.60V.
I reballing SMC and it turned on but it had a graphics error: the system detects 15mb on the graphics card and 42 "on the screen.
I have tried 3 SMC's from donor boards and none works: it only gets started with smc...
Good afternoon, guys.
The MacBook had gotten wet, the damaged components have already been replaced (including CD3217), it manages to go up to 20V - 1.30A but it resets to 0A.
Reviewing the Power sequencing diagram, the voltages reach the part of H9M LOAD SECURE ROM, SMC BATTERY TRAP: the last...
Got this board. All s5 rails are present. No water damage. Just stopped working.
ALL_SYS_PWRG is 0V. When i connect magsafe fan doesnt spin but board pulses all s0 rails for a second than stays in s5 state.
In SMC bypass fan spin and stop twice and than nothing happens.
The only rail not...
Definitly i am not decided to fry CPU, this is why i am registered in this forum and asking question to you.
Still not injected removed Q7960 and short is gone, after that removed L7960 and short was on second pad ( PPVCCIO_S0G). Dead CPU?
Thanks in advance for your help