overshoot
Member
Hi,
I got that board for data recovery.
Customer went to Apple after he cracked his screen.
MacBook was working prior to going to Apple as he said he could use it on an external screen + internal screen was lighting up.
Apple did diagnose that both screen and mainboard were dead.
Anyhow, Apple did not wanted to get his board replaced or fixed.
Customer needs data recovery now and hopefully would like to fix the laptop but he has crypto on it so data recovery is more important.
Inspection...
Board takes 20V and amperage will go to around 0.3A before going to 0 and does that over and over again.
There are no visual damage on the board, neither corrosion or knocked off parts.
With thermal cam I am only seeing the PMIC/T2 area getting warm.
I've tried a DFU revive with no luck on both Catalina/BigSur and I am always getting the same error message.
Measurements...
PPBUS_G3H jumps between 12.3V and 12.6V every 3-4 seconds
PPVDDCPU_AWAKE - 0.75V
PP1V2_AWAKE - 1.2V
PP1V8_AWAKE - 1.8V
PPVDDCPUSRAM_AWAKE - 0.8V
PP0V82_SLPDDR - 0.82V
PPVDDCPUSRAM - 1.06V
PP3V3_G3H_PMU_VDDMAIN - 3.34V
PP1V_PRIM - 0V
PPVPCORE_S5 - 0V
PP1V8_SLPS2R - 1.8V
PP0V9_SLPDDR - 0.9V
PP1V1_SLPS2R - 1.09V
PP0V8_SLPS2R - 0.8V
PP3V_G3H_RTC - 3V
PP1V8_S5 - 0V
PMU_ONOFF_L - 3.4V
PMU_RSLOC_RST_L - 3.4V
PM_SLP_S4_L - 0V
PM_SLP_SUS_L - 0V
I got that board for data recovery.
Customer went to Apple after he cracked his screen.
MacBook was working prior to going to Apple as he said he could use it on an external screen + internal screen was lighting up.
Apple did diagnose that both screen and mainboard were dead.
Anyhow, Apple did not wanted to get his board replaced or fixed.
Customer needs data recovery now and hopefully would like to fix the laptop but he has crypto on it so data recovery is more important.
Inspection...
Board takes 20V and amperage will go to around 0.3A before going to 0 and does that over and over again.
There are no visual damage on the board, neither corrosion or knocked off parts.
With thermal cam I am only seeing the PMIC/T2 area getting warm.
I've tried a DFU revive with no luck on both Catalina/BigSur and I am always getting the same error message.
Measurements...
PPBUS_G3H jumps between 12.3V and 12.6V every 3-4 seconds
PPVDDCPU_AWAKE - 0.75V
PP1V2_AWAKE - 1.2V
PP1V8_AWAKE - 1.8V
PPVDDCPUSRAM_AWAKE - 0.8V
PP0V82_SLPDDR - 0.82V
PPVDDCPUSRAM - 1.06V
PP3V3_G3H_PMU_VDDMAIN - 3.34V
PP1V_PRIM - 0V
PPVPCORE_S5 - 0V
PP1V8_SLPS2R - 1.8V
PP0V9_SLPDDR - 0.9V
PP1V1_SLPS2R - 1.09V
PP0V8_SLPS2R - 0.8V
PP3V_G3H_RTC - 3V
PP1V8_S5 - 0V
PMU_ONOFF_L - 3.4V
PMU_RSLOC_RST_L - 3.4V
PM_SLP_S4_L - 0V
PM_SLP_SUS_L - 0V