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Macbook A1708 . 820-00840 no image.

ipetro

ipetro

Member
Today I'm using a MacBook that sometimes boots and there is a picture, but if you turn it off and on there are no more pictures and with an external display it can also sometimes turn on. There is a problem somewhere and I hope we can solve it.
initial measurements:
PPBUS_G3H=13.08v
PPDCIN_G3=19.95v
PP5V_S5=5.12v
PP3V3_G3H=3.4v
 
ipetro

ipetro

Member
I also noticed such a strange thing that sometimes the PPBUS_G3H line sometimes shows a short circuit, but after 10 seconds it goes away and shows in diode mode = 0.393
 
2informaticos

2informaticos

Administrator
Staff member
What is CPU core voltage when the problem appears?

BTW, allow 10-15s before checking diode mode, or ohm scale, since the power is removed.
 
ipetro

ipetro

Member
diod mode
PPVCC_S0_CPU=0.003
PP1V_S0_CPU_VCCOPC=0.035
PP1V_S3_CPU_VCCPLL=0.179
PP1V2_S0SW_CPU_VCCPLLOC=0.076
PP1V_S3_CPU_VCCST=0.181
PP1V_S0SW_CPU_VCCSTG=0.157
PP1V2_S3_CPU_VDDQ=0.078
PP1V2_S3_CPU_VDDQC=0.078
PP0V95_S0_CPU_VCCIO=0.033
PPVCCSA_S0_CPU=0.004
This?
 
ipetro

ipetro

Member
PPVCC_S0_CPU=0.630v
PP1V_S0_CPU_VCCOPC=0.005v
PP1V_S3_CPU_VCCPLL=0.994v
PP1V2_S0SW_CPU_VCCPLLOC=1.2v
PP1V_S3_CPU_VCCST=0.994v
PP1V_S0SW_CPU_VCCSTG=0.994v
PP1V2_S3_CPU_VDDQ=1.2v
PP1V2_S3_CPU_VDDQC=1.2v
PP0V95_S0_CPU_VCCIO=0.994v
PPVCCSA_S0_CPU=0.784v
 
2informaticos

2informaticos

Administrator
Staff member
"PPVCC_S0_CPU=0.630v"
This look normal, like booted board.
Is interesting to know it when the board doesn't want to boot.
 
ipetro

ipetro

Member
The battery is charging, the fan is running, everything is heating up, but there is no picture! I just don’t understand what’s stopping the backlight from turning on. The display was tested with another board and it is working! Usually there is a very quiet click before the display turns on on all MacBook boards, but I don’t hear it (it’s like an automatic switch
 
ipetro

ipetro

Member
The MacBook turns on from the power button, the fan starts to spin and the touchpad works, but the Caps Lock indicator does not light up. The MacBook is charging and running on both battery and USB, the processor and Thunderbolt are warm.
Here are some measurements when assembled! everything is connected!
PPVCCCPU_S0G=0.801v
PPVCCSA_S0G=0.780v
PPVCCGT_S0G=0v
PP1V2_S3=1.2v
PPVCCIO_S0G=0.953v
PP1V_S3=1v
PP1V_S0G=1v
 
ipetro

ipetro

Member
While I was taking measurements, it turned on again! but as soon as I turn it off it won’t start again! could the problem be with the thunderbolt?
 
ipetro

ipetro

Member
The MacBook started up and there is an error report. Maybe it will become clear what is preventing it from starting.

*** MCA Error Report ***

CPU Machine Check Architecture Error Dump (CPU: Intel(R) Core(TM) i5-7360U CPU @ 2.30GHz, CPUID: 0x806E9)

Core: 0

IA32_MC3_STATUS=0xFE00000000800400

IA32_MC3_CTL=0x0

IA32_MC3_ADDR=0x88C0B534

IA32_MC3_MISC=0x88C0B534

Core: 0

IA32_MC4_STATUS=0xFE00000000800400

IA32_MC4_CTL=0x0

IA32_MC4_ADDR=0x88C0B534

IA32_MC4_MISC=0x88C0B534

Core: 1

IA32_MC3_STATUS=0xFE00000000800400

IA32_MC3_CTL=0x1F

IA32_MC3_ADDR=0x88C0B534

IA32_MC3_MISC=0x88C0B534





*** Device Tree ***

{

"pcie_cfg_base" : "0xe0000000",

"pci_devices" :

{

"0x0" : "MCHC@0",

"0x10000" : "IGPU@2",

"0xa0000" : "XHC1@14",

"0xa8000" : "pci8086,9d60@15",

"0xb0000" : "IMEI@16",

"0xaa000" : "pci8086,9d62@15,2",

"0xe0000" : "RP01@1C",

"0xe4000" : "RP05@1C,4",

"0xe8000" : "RP09@1D",

"0xe9000" : "RP10@1D,1",

"0xf0000" : "URT0@1E",

"0xf3000" : "SPI1@1E,3",

"0xf8000" : "LPCB@1F",

"0xfa000" : "PMCR@1F,2",

"0xfb000" : "HDEF@1F,3",

"0xfc000" : "SBUS@1F,4",

"0x100000" : "RP01@1C/IOPP/SSD0@0",

"0x200000" : "RP09@1D/IOPP/ARPT@0",

"0x300000" : "RP10@1D,1/IOPP/CMRA@0",

"0x400000" : "RP05@1C,4/IOPP/UPSB@0",

"0x500000" : "RP05@1C,4/IOPP/UPSB@0/IOPP/DSB0@0",

"0x508000" : "RP05@1C,4/IOPP/UPSB@0/IOPP/DSB1@1",

"0x510000" : "RP05@1C,4/IOPP/UPSB@0/IOPP/DSB2@2",

"0x520000" : "RP05@1C,4/IOPP/UPSB@0/IOPP/DSB4@4",

"0x600000" : "RP05@1C,4/IOPP/UPSB@0/IOPP/DSB2@2/IOPP/XHC2@0",

"0x700000" : "RP05@1C,4/IOPP/UPSB@0/IOPP/DSB0@0/IOPP/NHI0@0"

},

"device_mmio" :

{

"PCI0@0" :

[

{ "a" : "0xcf8", "s" : "0x8" }

],

"PCI0@0/AppleACPIPCI/IGPU@2" :

[

{ "a" : "0x7fa0000000", "s" : "0x1000000" },

{ "a" : "0x7f90000000", "s" : "0x10000000" }

],

"PCI0@0/AppleACPIPCI/XHC1@14" :

[

{ "a" : "0x7fa1010000", "s" : "0x10000" }

],

"PCI0@0/AppleACPIPCI/pci8086,9d60@15" :

[

{ "a" : "0x7fa1028000", "s" : "0x1000" }

],

"PCI0@0/AppleACPIPCI/pci8086,9d62@15,2" :

[

{ "a" : "0x7fa1027000", "s" : "0x1000" }

],

"PCI0@0/AppleACPIPCI/IMEI@16" :

[

{ "a" : "0x7fa1026000", "s" : "0x1000" }

],

"PCI0@0/AppleACPIPCI/RP01@1C/IOPP/SSD0@0" :

[

{ "a" : "0x92700000", "s" : "0x4000" }

],

"PCI0@0/AppleACPIPCI/RP05@1C,4/IOPP/UPSB@0/IOPP/DSB0@0/IOPP/NHI0@0" :

[

{ "a" : "0x92a00000", "s" : "0x40000" },

{ "a" : "0x92a40000", "s" : "0x1000" }

],

"PCI0@0/AppleACPIPCI/RP05@1C,4/IOPP/UPSB@0/IOPP/DSB2@2/IOPP/XHC2@0" :

[

{ "a" : "0x92900000", "s" : "0x10000" }

],

"PCI0@0/AppleACPIPCI/RP09@1D/IOPP/ARPT@0" :

[

{ "a" : "0x92400000", "s" : "0x8000" },

{ "a" : "0x92000000", "s" : "0x400000" }

],

"PCI0@0/AppleACPIPCI/RP10@1D,1/IOPP/CMRA@0" :

[

{ "a" : "0x92600000", "s" : "0x10000" },

{ "a" : "0x7f80000000", "s" : "0x10000000" },

{ "a" : "0x92500000", "s" : "0x100000" }

],

"PCI0@0/AppleACPIPCI/URT0@1E" :

[

{ "a" : "0x7fa1025000", "s" : "0x1000" }

],

"PCI0@0/AppleACPIPCI/SPI1@1E,3" :

[

{ "a" : "0x7fa1024000", "s" : "0x1000" }

],

"PCI0@0/AppleACPIPCI/PMCR@1F,2" :

[

{ "a" : "0x92824000", "s" : "0x4000" }

],

"PCI0@0/AppleACPIPCI/HDEF@1F,3" :

[

{ "a" : "0x7fa1020000", "s" : "0x4000" },

{ "a" : "0x7fa1000000", "s" : "0x10000" }

],

"PCI0@0/AppleACPIPCI/SBUS@1F,4" :

[

{ "a" : "0x7fa1029000", "s" : "0x100" }

],

"DMAC" :

[

{ "a" : "0x0", "s" : "0x20" },

{ "a" : "0x81", "s" : "0x11" },

{ "a" : "0x93", "s" : "0xd" },

{ "a" : "0xc0", "s" : "0x20" }

],

"FWHD" :

[

{ "a" : "0xff000000", "s" : "0x1000000" }

],

"IPIC" :

[

{ "a" : "0x20", "s" : "0x2" },

{ "a" : "0x24", "s" : "0x2" },

{ "a" : "0x28", "s" : "0x2" },

{ "a" : "0x2c", "s" : "0x2" },

{ "a" : "0x30", "s" : "0x2" },

{ "a" : "0x34", "s" : "0x2" },

{ "a" : "0x38", "s" : "0x2" },

{ "a" : "0x3c", "s" : "0x2" },

{ "a" : "0xa0", "s" : "0x2" },

{ "a" : "0xa4", "s" : "0x2" },

{ "a" : "0xa8", "s" : "0x2" },

{ "a" : "0xac", "s" : "0x2" },

{ "a" : "0xb0", "s" : "0x2" },

{ "a" : "0xb4", "s" : "0x2" },

{ "a" : "0xb8", "s" : "0x2" },

{ "a" : "0xbc", "s" : "0x2" },

{ "a" : "0x4d0", "s" : "0x2" }

],

"MATH" :

[

{ "a" : "0xf0", "s" : "0x1" }

],

"LDRC" :

[

{ "a" : "0x2e", "s" : "0x2" },

{ "a" : "0x4e", "s" : "0x2" },

{ "a" : "0x61", "s" : "0x1" },

{ "a" : "0x63", "s" : "0x1" },

{ "a" : "0x65", "s" : "0x1" },

{ "a" : "0x67", "s" : "0x1" },

{ "a" : "0x80", "s" : "0x1" },

{ "a" : "0x92", "s" : "0x1" },

{ "a" : "0xb2", "s" : "0x2" },

{ "a" : "0xffff", "s" : "0x1" },

{ "a" : "0x1800", "s" : "0xff" },

{ "a" : "0x800", "s" : "0x80" }

],

"RTC" :

[

{ "a" : "0x70", "s" : "0x8" }

],

"TIMR" :

[

{ "a" : "0x40", "s" : "0x4" },

{ "a" : "0x50", "s" : "0x4" }

],

"SMC" :

[

{ "a" : "0x300", "s" : "0x20" },

{ "a" : "0xfef00000", "s" : "0x10000" }

],

"EC" :

[

{ "a" : "0x62", "s" : "0x1" },

{ "a" : "0x66", "s" : "0x1" }

],

"PDRC" :

[

{ "a" : "0xfed10000", "s" : "0x8000" },

{ "a" : "0xfed18000", "s" : "0x1000" },

{ "a" : "0xfed19000", "s" : "0x1000" },

{ "a" : "0xe0000000", "s" : "0x10000000" },

{ "a" : "0xfed20000", "s" : "0x20000" },

{ "a" : "0xfed90000", "s" : "0x4000" },

{ "a" : "0xfed45000", "s" : "0x4b000" },

{ "a" : "0xff000000", "s" : "0x1000000" },

{ "a" : "0xfee00000", "s" : "0x100000" },

{ "a" : "0xfd000000", "s" : "0x1000000" },

{ "a" : "0xfe000000", "s" : "0x10000" },

{ "a" : "0xfe010000", "s" : "0x1000" },

{ "a" : "0xfe020000", "s" : "0x16000" },

{ "a" : "0xfe036000", "s" : "0x6000" },

{ "a" : "0xfe03c000", "s" : "0x1000" },

{ "a" : "0xfe03d000", "s" : "0x83000" },

{ "a" : "0xfe0c0000", "s" : "0x40000" },

{ "a" : "0xfe100000", "s" : "0x100000" },

{ "a" : "0xfe200000", "s" : "0x200000" },

{ "a" : "0xfe400000", "s" : "0x10000" },

{ "a" : "0xfe410000", "s" : "0x1f0000" },

{ "a" : "0xfe600000", "s" : "0x200000" }

],

"MEM2" :

[

{ "a" : "0x20000000", "s" : "0x200000" },

{ "a" : "0x40000000", "s" : "0x200000" }

]

}

}
 
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