Re: MacBook Pro Retina Late 2013 shows light, fan spin but no chime
Meter in lowest resistance scale. Remove all power / no battery.
Measure with the meter probe on L9330, pin # 2 or any of the cluster of caps (+ = positive side of the caps).
What is the resistance to ground ? If possible, take a picture of the meter taking this measurement so we can be sure of the meter scale.
It is possible that the GPU is damaged from a high voltage surge onto this low voltage rail.
Also - what is the voltage on the OTHER side of R5350 & R5351 = PP3V3_S0_SMBUS_SMC_0_S0 ?
Can you help with measuring point for PPVCORE_S0_GFX_REG please?
Measure with the meter probe on L9330, pin # 2 or any of the cluster of caps (+ = positive side of the caps).
What is the resistance to ground ? If possible, take a picture of the meter taking this measurement so we can be sure of the meter scale.
It is possible that the GPU is damaged from a high voltage surge onto this low voltage rail.
Also - what is the voltage on the OTHER side of R5350 & R5351 = PP3V3_S0_SMBUS_SMC_0_S0 ?
Comment