Chosen Solution

Someone spilled tea on it and saw the screen short out. After using Windex to clean up the logic board almost everything works, memory, power, etc. except that the screen is so dim I need to use a flashlight to see it. Output to external monitor is just fine. Can this dim screen output be fixed? Repair shop tried soldering something on the logic board they thought would affect screen brightness but to no avail. They said that the controller for screen brightness was not working, not sending the correct voltage out to make the screen brighter. I can press every key on the keyboard and they all work, but the screen brightness keys (although showing the brightness icon and filling more bars as I press longer) do not affect screen brightness in any way. It is still dim. So close and yet so far– what can I do to fix this?

I don’t know why the repair shop jumped to a logic board issue. I would assume your backlight LED driver broke. It is extremely common problem in almost all laptops, and can easily be caused by liquid damage. I believe (someone please correct me if I’m wrong) the LED driver board on this machine is part of the LCD, which will need to be replaced if the LED driver board is broken. We have the guide for the entire Display Assembly. Getting the LCD out of the Display Assembly is likely going to cause some irreversible cosmetic damage, I would recommend replacing the whole thing. EDIT: This computer has an LED backlight, so no inverter.

any updates? I have the exact problem right now.

OK, Your edit said that there is no inverter, I will either replace the display or get an HDMI cable and hook it up to a monitor. Thanks!

i have the same issue? apple genius wanted a price for a new macbook ( mine is a mid 2013 macbook air). I got a new screen, switched it but it gave the same result. The guy at apple said they might need to change the logic board or tiny piece of it! I wonder if there is a tiny piece to change or is it the whole logic board. I will order a new logic board and change it my self and will keep you posted! if anyone else had this issue please let us know. P.S. I can see everything and use the macbook normally when i shine a light source on it real close, like an iPhone flash!

I’m having same problem as your’s my laptop display is also very dim. i Tried cleaning the plugs but it did’nt works A shopkeeper said that he will take rs1200 to fix it