Chosen Solution
Hi After i changed thermal paste my MacBook doesnt have backlight The efuse it’s okay What More i need to check and how can i check with multimeter? Thanks! Update (03/31/2020) Pictures with LVDS cable and connector
And i have one more question From backlight efuse to LVDS connector no connection is normal? video : https://youtu.be/t6BfFxcJ-CA
I would use a flashlight aimed into the Apple logo to see if you can see a faint image of your desktop and icons. A common issue I’ve found is people often damage the connector, with the battery disconnected. Disconnect the LVDS cable from the logic board and inspect the cable end corners did you damage them? Update (03/31/2020) At this point you’ll need to trace your backlight circuit. Do you have the schematics and board views for your logic board? Do you have a good understanding of micro-electronics? And lastly do you have the needed tools to de-solder the small SMT components and solder them on? If not I would recommend you find someone who has the skills and tools to do this, besides you’ll likely need a component or two. For a good reference I would spend the time reviewing Louis Rossmann’s vids
To verify, hook up an external monitor. If nothing else and it works, you have the use of your computer again.
