Macbook Pro A2141 works but doesn't show anything on screen

[sam k]

hi
Macbook pro A2141 i open it and saw both side screen connector from the screen and mother board badly damaged, and after Tok out the logic board saw a component blows up next to the screen connector, is there any way to fix?
thanks

 

[2informaticos]

First of all, welcome to the forum!

Check schematic/boardview and tell us which component is damaged?
If motherboard video connector is damaged, remove it and clean the pads.
Then check in diode mode (to ground) all EDP_INT lines.

 

[sam k]

First of all, welcome to the forum!

Check schematic/boardview and tell us which component is damaged?
If motherboard video connector is damaged, remove it and clean the pads.
Then check in diode mode (to ground) all EDP_INT lines.

Ok thanks, I’ll give you updates

 

[sam k]

Ok thanks, I’ll give you updates

The connector over the motherboard doesn’t damage but one side of ribbon cable is damaged + screen connector

 

[2informaticos]

No problem, just check above mentioned.

Please, do not quote an entire post, visible few centimeters above.
Write directly into bottom reply box, instead of clicking Reply button...

 

[sam k]

I’m using zxw board view doesn’t have this model number, but I took a picture that shows the blown component

 

[2informaticos]

A2141 - 820-01700.zip

drive.google.com

Is that L8504?
We still expect EDP_INT readings (diode mode)...

 

[sam k]

Yes, it’s L8504

 

[2informaticos]

Why don't you post the readings I asked?

 

[sam k]

i have zxw this software doesn't have the model number a2141

 

[2informaticos]

I sent you schematic and boardview...

 

[sam k]

Thank you

 

[sam k]

where did you sent

 

[2informaticos]

Few posts above, Google Drive link...

 

[sam k]

It doesn’t have search option, so hard to find that. Do you have any schematic software i could buy or any idea

 

[2informaticos]

Some pdf files will not show exact string on the search; just delete 1-2 digits from the string name and try again.

 

[sam k]

take a look at the measurement

 

[2informaticos]

I didn't ask to check all.
But if you have time to waste, is your choice.

Pins 1 & 3 have very low readings, so U9850 is burnt.
Should replace L8504 too, of course.

Once the screen is connected to MLB, before applying power (don't connect battery yet), check diode mode on J8500's power rails.

 

[sam k]

thanks, but problem is the board view file you sent, i cant open it do you have any advise for me

 

[2informaticos]

Download latest OpenBoardview software fro free.
If still not working, you can find modded version on badcaps forum.