A1932 820-01521

[ipetro]

does not turn on!
caps lock does not light!
fan rotates!
battery charges!
no picture!
restored via DFU did not help.
no picture but touchpad clicks!
responds to on/off button!
power supply 20v/1.8a

 

[2informaticos]

Did you test the board alone on the desk?
Check for USB activity.

 

[ipetro]

the board is outside the case! the power supply rises to 20v/0.520a and then drops to 0.397a

 

[ipetro]

there is also no image on the external display

 

[2informaticos]

Any history available?
Tested disconnecting audio flex?
Do you get CPU core voltage?

 

[ipetro]

PPVCC_S0_CPU=0,854v
PPVCCSA_S0_CPU1.114v
PPVCCSA_S0_CPUDDR=1.1v
PPVCCGT_S0_CPU=0v
PPVCCIO_S0_CPU=0.956v
PP1V2_S0SW=1.1v
PP1V2_S3=1.1v
PP0V6_S0_DDRVTT=0.596v

 

[2informaticos]

USB activity?

 

[ipetro]

I apologize, I don't quite understand what you're asking. What should I do or check? USB charges the MacBook and was restored without errors via DFU. Please tell me what exactly I can check for you?

 

[2informaticos]

Connect an external USB device, with Link LED; like bootable pendrive.
If LED flashes, then you have activity.
In such case, board boots but have video problem.
If no USB activity, nor video, then board doesn't boot; only turns on.
Then I suspect the CPU...