[help]macbook air 820-01521...seems alive but it's dead! crazy!!

[phantom]

motherboard like new. all perfect!

I have 20v on both ports.

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no fan spin, no caps lock led, trackpad works. no sound. no external video

 

[2informaticos]

Which big coils get voltage?

 

[phantom]

what do you mean?

i've tried to reactivate the mac: it goes from dfu to recovery, than it give me back error 4010! trackpad and battery connected. charger connected

 

[2informaticos]

I could only see 1.6A consumption; possibly with battery connected.

What is the current consumption without battery?
Can you post voltage on the coils?

 

[phantom]

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Without battery

Just because now it is stuck in Recovery mode

 

[2informaticos]

Force it off and put in DFU again.

 

[phantom]

How? Even removing the battery, as soon as I Connect to my mac, it goes to Recovery.

 

[2informaticos]

Pressing power button 10s should turn it off.
Not sure if you can access pure DFU mode with keyboard only.
I do it using external switch method usually.

 

[phantom]

I’ve had access to dfu always through keyboard!!

 

[2informaticos]

You've said it appears in Recovery, not DFU.
Or do you mean that it starts on Internet Recovery mode in fact?