01-24-2012, 12:45 AM #1
MacBook display randomly blacks out (backlight problem)
- Member Since
- Jan 24, 2012
The display on this MacBook (not Pro) randomly blacks out. Seems to be related to warming up. After the computer powers up it takes a few minutes before it blacks out first time. After it has happened I can bring it back by first decreasing brightness to 0 and then by increasing it back. Sometimes I need to wait for a few seconds before it can work. I searched internet and tried some repair/diagnostics. I changed the inverter board (got it supposedly new from ebay), but it didn't help. I have also checked that it works fine with an external monitor. So, does it mean that I need to replace the LCD panel? Or is there a way to replace just the backlight?
05-17-2012, 03:02 AM #2
Backlight Problem - overtightened screw/s
- Member Since
- May 16, 2012
mbmsv describes exactly the problem I was having. My backlight problem was not related to movement of the screen. It was somehow related to load/heat, specifically if I had a few browser tabs open and then started watching Netflix. Then I would lose the backlight and only get it back briefly by reducing and then increasing screen brightness, or by shutting down Netflix. This is what I did:
I removed both of the inside (closest to the hinge) screws in the rear end of the unit. I think that over tightening these screws is causing this particular problem. I have a feeling that it is the left side (right side if facing the machine) specifically but have been too relieved to figure out which one for sure as yet. I will experiment later to determine wich screw.
The only other things I also did was to reset the NVRAM by holding down the power button for 5 secs with no power. I also did not replace the battery, which is dead anyway. I doubt very much that either of those had any effect.
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
By MacDude121 in forum Apple NotebooksReplies: 7Last Post: 08-27-2013, 02:12 PM
By cwa107 in forum Apple NotebooksReplies: 7Last Post: 12-30-2011, 11:53 PM
By bikernantz in forum Apple NotebooksReplies: 1Last Post: 09-21-2010, 03:45 PM
By kroddz in forum Apple NotebooksReplies: 13Last Post: 07-10-2010, 01:17 PM
By willwallner in forum Switcher HangoutReplies: 1Last Post: 10-19-2009, 09:31 AM