820-01958 No power

[carlosaovalle]

Hi, there is another MacBook that was brought to me with no power. Mobo looks clean, untouched, no corrosion or missing/broken components.

ppdcin_g3h 20.v
pp3v3_g3h 3.3v
ppbus_g3g 12.5V
pp3v3_S5 3.3V
all_sys_pwrgd 1.5V
L7670 5.1 V
L7030 11.7V


L8041 0 V
L8100 1.1V
L7210 1.6V
L7220 1.6V
L7230 1.6V
L7400 1.655 V
L7690 3.3 V
L7670 5.1 v
L6960 3.3V
L8150 0.6V
L9060 2.5
L7701 1.8v

 

[2informaticos]

Did you try any DFU option?

 

[carlosaovalle]

Hi!
There is no way the macbook go to dfu! I tried multiple times.
While I was trying to do that the apple logo showe! Got stuck there and fan started fas spin. I removed power cord and shutted off right away.

 

[2informaticos]

You can try using wire method.
No pads available on this board.
You need to solder an wire from pin 1/R8010 to some point of 1V8_SLPS2R rail.

 

[carlosaovalle]

I ran a wire from 1/R8010 to 1/ C7845. Still death and not going to dfu.

 

[2informaticos]

Check if all SLPS2R and AWAKE voltages are present.

 

[carlosaovalle]

Now The Macbook turns on, gets stuck on Apple Logo and fan spins high speed. Does not holds charge. wont respond to power button.

P1V1SLPS2R_FB 1.1V
P1V1SLPS2R_SW0 1.1V
P1V1SLPS2R_SW1 1.1V
P1V8SLPS2R_FB 1.8V
PP0V8_SLPS2R 0.8v
PP1V1_SLPS2R 1.1v
PP1V25_SLPS2R_SMC_AVREF 1.25 V
PP1V8_SLPS2R b 1.8V
PP1V8_SLPS2R_PMUVDDGPIO 1.8 V
PP1V8_SLPS2R_SOC_LPADC_RC 1.8v
SOC_SLPS2R_RED 0.65V

PP1V2_AWAKE 1.2V
PP1V2_AWAKE_SOC_PCIEPLL_F 1.2v
PP1V2_AWAKE_SOC_PCIEREFBUF_F 1.2V
PP1V2_AWAKE_SOC_PLLSOC_F 1.2 V
PP1V8_AWAKE 1.8V
PP1V8_AWAKE_SOC_FMON_F 1.8 v
PP1V8_AWAKE_SOC_TSADC_RC 1.8 V
PP3V3_AWAKE 3.3V
PPVDDCPUSRAM_AWAKE 0.8V
PPVDDCPU_AWAKE 0.55V
PVDDCPUAWAKE_FB 0.55V
PVDDCPUAWAKE_FB_XW 0.55V
PVDDCPUAWAKE_SW1 0.55V
PVDDCPUSRAMAWAKE_FB 0.80V
PVDDCPUSRAMAWAKE_SW0 0.8 V
SOC_AWAKE_BLUE 0.09V
SOC_AWAKE_BLUE_R 0.0165 v

 

[2informaticos]

Try DFU now again...

 

[carlosaovalle]

Correct me if Im doing it wrong!
I have a source computer with Apple Configurator and usb c to usb c data capable cable.

Press press down
Power+right control+ right option + right shift for 10 seconds.

Also power button for one second the release the power button again and r control+ r option + right shift for 10 seconds again.

 

[2informaticos]

DFU Mode Restore (Macs) - LogiWiki

We have Apple MacBook and iPhone Diode readings and general fault finding information compiled by the leaders in this area

logi.wiki

 

[carlosaovalle]

Hi Again!
the macbook is turning on. show apple logo for a long time., no progress bar. After a while it gets to log in page. Cursor runs slow and is not charging.

 

[2informaticos]

Looks like bad battery, or not proper recognized.
Connect known good battery for test.

 

[carlosaovalle]

Battery is not the issue! I put a new battery in. Still stuck in logo , not charging.no progress bar , fan spin high speed.

 

[2informaticos]

New dosen't mean known good!