Hey guys!
I've got my sisters 13-inch, Mid 2009 Macbook here, because its display illumination fails from time to time (often enough that she can't work properly).
Sometimes a P-RAM and/or SMC reset helped to get the illumination working again, but even that was just temporary.
I read a lot and have already replaced the illuminatior board as well as the attached cable - unfortunately both didn't help.
My last desperate step was baking an apple-cake - Removed the logic board and put it into the oven for 7:30min at 180°C - without success.
From time to time, when I start up the device, it works like there is no failure at all, but some minutes later it can happen that the display turns black out of the sudden.
Sometimes then it helps to manually adjust the background lighting via the keyboard buttons (turn it to completely dark (level 0) and then quickly switch between illumination level 0 and 1 for a few times), but sometimes it doesn't and the display is just flickering shortly.
I also noticed that I can delay the failure if I turn off automatic display dimming.
When I plugin the Mini-DVI => VGA Adapter, I have a proper signal on my external monitor, but the mac-screen keeps dark (dark means no illumination, you can still see screen contents if you use a torch aim against the screen.
Does anyone have suggestions for me how go on now? Meanwhile I'm afraid that the logic board was the point of failure from the beginning.
Thanks in advance for your help!
Best regards,
Roland
Here are some more hardware details:
Modellname: MacBook
Modell-Identification: MacBook5,2
Processortype: Intel Core 2 Duo
Processorspeed: 2,13 GHz
Number of Processors: 1
Number of Cores: 2
L2-Cache: 3 MB
Memory: 2 GB
Busgspeed: 1,07 GHz
Boot-ROM-Version: MB52.0088.B05
SMC-Version (System): 1.38f5
I've got my sisters 13-inch, Mid 2009 Macbook here, because its display illumination fails from time to time (often enough that she can't work properly).
Sometimes a P-RAM and/or SMC reset helped to get the illumination working again, but even that was just temporary.
I read a lot and have already replaced the illuminatior board as well as the attached cable - unfortunately both didn't help.
My last desperate step was baking an apple-cake - Removed the logic board and put it into the oven for 7:30min at 180°C - without success.
From time to time, when I start up the device, it works like there is no failure at all, but some minutes later it can happen that the display turns black out of the sudden.
Sometimes then it helps to manually adjust the background lighting via the keyboard buttons (turn it to completely dark (level 0) and then quickly switch between illumination level 0 and 1 for a few times), but sometimes it doesn't and the display is just flickering shortly.
I also noticed that I can delay the failure if I turn off automatic display dimming.
When I plugin the Mini-DVI => VGA Adapter, I have a proper signal on my external monitor, but the mac-screen keeps dark (dark means no illumination, you can still see screen contents if you use a torch aim against the screen.
Does anyone have suggestions for me how go on now? Meanwhile I'm afraid that the logic board was the point of failure from the beginning.
Thanks in advance for your help!
Best regards,
Roland
Here are some more hardware details:
Modellname: MacBook
Modell-Identification: MacBook5,2
Processortype: Intel Core 2 Duo
Processorspeed: 2,13 GHz
Number of Processors: 1
Number of Cores: 2
L2-Cache: 3 MB
Memory: 2 GB
Busgspeed: 1,07 GHz
Boot-ROM-Version: MB52.0088.B05
SMC-Version (System): 1.38f5
