Hi! I'm a bit new to this whole repair world. But this is what i'm working on:
A Macbook Pro A1990 (820-01814) from 2018. It has no image – or backlight for that matter.
No history of liquid spills or anything. It's fully functional on external monitor - and the webcam works.. But it doesn't seem like the internal display is even detected.
Sometimes the backlight lights up, when booting into recovery mode. (No image still)
That's the only progress I've gotten.
I tested the panel on another Macbook, and the display worked perfectly. So, I know it's well and working.
I get 0 volts on PPVOUT_S0_LCDBKLT and the same on EDP_BKLT_EN. Tried diode-mode on PPVOUT_S0_LCDBKLT and got a reading of about 1950. I'm not I entirely sure what that tells me.
I really can't figure out what the problem is. Can't seem to find any defect components or anything.
I really hope someone can will help me
All the best
-R
A Macbook Pro A1990 (820-01814) from 2018. It has no image – or backlight for that matter.
No history of liquid spills or anything. It's fully functional on external monitor - and the webcam works.. But it doesn't seem like the internal display is even detected.
Sometimes the backlight lights up, when booting into recovery mode. (No image still)
That's the only progress I've gotten.
I tested the panel on another Macbook, and the display worked perfectly. So, I know it's well and working.
I get 0 volts on PPVOUT_S0_LCDBKLT and the same on EDP_BKLT_EN. Tried diode-mode on PPVOUT_S0_LCDBKLT and got a reading of about 1950. I'm not I entirely sure what that tells me.
I really can't figure out what the problem is. Can't seem to find any defect components or anything.
I really hope someone can will help me
All the best
-R
