820-01521 no image

[ajdoc]

MacBook from another shop - liquid damage on U3000 area, C9062, C6405 area, Q7680 area, Q7065

Audio board + flex is good.

Chime, trackpad clicks, caps lock light ON, backlight on display but no data.

No video on ext monitor.

Any idea?

 

[2informaticos]

Did you try DFU?

 

[ajdoc]

I cant I am afraid as when it is turned off it boots itself.

 

[2informaticos]

Cannot turn it off pressing power button 5s?

 

[ajdoc]

Yes, I can but after second or two it starts itself.

 

[2informaticos]

And stays on?
Check for USB activity.

 

[ajdoc]

No, after 2-4 minutes for a short time fan on max rpm, USB activity OFF and reboot with chime.

 

[2informaticos]

Possibly accumulated crap under some BGA chip.