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CPUCORE_SW1 - GND I am getting 2.0 ohms Getting my head round lots of this. I am using 200 as the measuring option on the Multimeter.

So the short is coming after U7210 Im getting all voltage in PPBUS_HS_CPU - 5v PP5V_G3S_CPUREG_MISC - 5v CPUCORE_FCCM - 2.5v CPUCORE_PWM1 - 2.5v Nothing on PPVCC_CPU_PH1. Is it worth removing U7210 to see if the short goes or do you think the issue is further downstream or the processor...

PPVCCSA_CPU_R - GND = 090 in diode mode (Positive on ground) Is this a little high for a straight up short? Thanks

I am now getting these, before they were 0v PP3V3_S5 - 3.3v PP1V8_S5 - 1.8v

PP5V_G3H - 5.09v PP3V3_G3H - 3.29v PPVIN_S0SW_LCDBKLT - 0v CHGR_LX2 - 12.92v PPVCCEDRAM_S0_REG_R - 0v PPVCCGT_CPU_PH1 - 0v CPUGT_SW1 0v CPUGT_SW2 - 0v CPUCORE_SW1 - 0v CPUCORE_SW2 - 0v PPVCCSA_CPU_R - 0.1v PP0V95_S0_CPUVCCIO_REG_R - 0.95v PP1V2_S3_REG_R - 1.24v Where voltage is present it is on...

I have completed a restore, no error message. When configurator completes the fan spins for 1 second before going off again. Nothing shows on screen.

Can that be done from Configurator? How is it done? Also I've yet to see anything on the screen of this MacBook. Would have thought after a revive I would get the Battery icon etc Thanks!

So feels like that's completing as not coming up with an error. Should the processor come on and how best to check?

Ok, exactly the same result when reviving using an A1708 Macbook running Big Sur.

I tried it on a laptop running Catalina, images show the sequence. The laptop remains unresponsive post Revive. Will try on Big Sur

PP0v8_SLPS2R - 0.79v PP1v1_SLPS2R - 1.19v PP1v8_SLPS2R - 1.79v PP1v8_AWAKE - 1.79v PP3v3_AWAKE - 3.27v

To confirm that's, PP0v8_SLPS2R PP1v1_SLPS2R PP1v8_SLPS2R PP0v8_AWAKE PP1v1_AWAKE PP1v8_AWAKE ??? I have tried Revive, there was no error this time. The machine no longer shows recovery in Configurator, it just says apple controller under the box which appears. I can still get it into DFU...

PP3V3_S5 - 0v PP1V8_S5 - 0v SSD0_VR_P2V5_PGOOD - 2.27v SSD0_PMIC_RESET_L - 1.79v PMU_ONOFF_L - 3.25v

I have a 820-01598-A which won't turn on. I can get it into DFU mode but can't successfully restore - USB Coms error Getting the correct voltages for 0V9_SSD0 and 2V5_NAND_SSD0 PPBUS = 12.55v Prior to attempting a DFU restore the fan repeatedly would spin for 1 second and then stop with a...

R7012 Values Bad Board - 19.4k ohms Good Board - 21.8k ohms

I don't know what caused the extra challenge. It must have been me and a loose grounding wire to the multimeter, no one else to blame etc. I have components to swap out.. but first Getting the following in diode mode.. DCIN_ISOL_GATE_R to GND - 954 DCIN_ISOL to GND - 1012 On a good board I...

Its going to be to do with the ISL6259 right? ?‍♂️

Yep always original, no fakes here. Have been looking at the onewire/adapter sense systems to work out what's preventing the charger light from coming on. More than I bargained for... I have a bunch of working boards to compare against. U7000, U7001and surrounding components seem good. I am...

Ok so things changed again, when I reconnected the genuine MagSafe 2 85w adapter there was no indicator light. X3 chargers tested which work fine on other machines. I am going to re-measure everything and provide again.

After connecting the machine to power again the CPU/Heatsink is getting pretty hot. I measured the Pins again and have outlined the changes. ISL6259 Voltages Pin 1 - 0v 2 - 20.1v 3 - 4.66v 9 - 0.23v 12 - 3.39v 13 - 3.08v 14 - 2.29v 15 - 0.04v 17 - 2.46v 19 - 5.49v 20 - 5.49v 27 - 19.9v Shall...