Hi,
1. I have macbook pro 2018 with T2 chip here which is not starting.
2. The board has none psychical damage, no liquid damage, looks like brand new.
3. I bought this macbook, previous owner said that macbook suddenly stopped working and did not turn on again.
4. I successfully restored it through DFU with apple configurator 2 and other macbook.
5. When I apply a power, the system will spins the fans for second and then after approx 30 seconds again.
6. No display at all, no startup chime. I have a trackpad click.
7. I measured important power rails, which look fine.
8. ALL_SYS_PWRGD is 1.8V exactly.
9. The PPVCC_S0_CPU will go to 0.88V for time the fans are spinning and then 0V.
10. Sometimes (1 try out of 10), the PPVCC_S0_CPU will stay at 0.75V with fans spinning.
Please advise me, what should I check next.
1. I have macbook pro 2018 with T2 chip here which is not starting.
2. The board has none psychical damage, no liquid damage, looks like brand new.
3. I bought this macbook, previous owner said that macbook suddenly stopped working and did not turn on again.
4. I successfully restored it through DFU with apple configurator 2 and other macbook.
5. When I apply a power, the system will spins the fans for second and then after approx 30 seconds again.
6. No display at all, no startup chime. I have a trackpad click.
7. I measured important power rails, which look fine.
8. ALL_SYS_PWRGD is 1.8V exactly.
9. The PPVCC_S0_CPU will go to 0.88V for time the fans are spinning and then 0V.
10. Sometimes (1 try out of 10), the PPVCC_S0_CPU will stay at 0.75V with fans spinning.
Please advise me, what should I check next.
, and it will not display anything on the internal display. I have verified that there's no backlight, as I booted the laptop and shined a flashlight on it and there's no display; it does completely boot up, and shows fine on an external...
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