LED backlight has a dark pattern on bottom edge of the screen?
My LED backlight has a weird pattern on the bottom. It seems that every other LED is dim (but not completely off).
Here are a few pictures:
I've noticed that restarting the computer fixes it temporarily (not always though). I've also noticed the backlight flickering a little bit, and then having the dark spots either go away or come back.
Has anyone else had this problem and found a solution that fixes it? I've found other posts online about this issue, but no one seems to post the solution.
......( Update 7/29/2011 )......
I replaced the LED driver board with a new one I purchased from eBay. That did not fix the problem.
There are a few things that I didn't mention in my original question:
- The backlight on my MacBook Pro is 100% perfect for the first 2 or 3 seconds after turning it on (or resuming from standby). After a few seconds, every other backlight LED is slightly dim (but not completely off). This makes it seem like it could be a bad capacitor somewhere.
- External monitors work perfectly. I'm using a 24" Samsung T240HD monitor connected to the DVI port on my MacBook Pro with no issues at all. Only the 15" display on the MacBook Pro has the LED backlight problem.
I'm starting to think that the problem is either the LCD screen or the left I/O board (the small board with the magsafe connector). The power cable for the LED backlight plugs into the left I/O board.
Here is a better picture with a solid white background:
......( Update 9/17/2011 )......
I finally fixed it. It was the LCD screen. I bought a new LCD screen from eBay, and now my backlight is perfect. I have a glossy LCD screen instead of a matte. I like it. The contrast is much better with a glossy screen. It seems to be sharper as well.