I wanted to start a thread for people who want to talk about more technical type topics related to the macbook line. I wanted to start with the mac book air true white screen problem. I have three on these on my bench I am messing with. But any board level topics for techs or the like are welcome.
The macbook airs are a very weird problem because unlike the normal GPU meltdown of the Macbook pros (which I have done hundreds of (Please Dont put those in your oven
). What I mean the main way you know if a GPU has melted down right off the bat is it will not work on an external display as well as on the built in display. These mac airs Give you a white screen on the laptop but if you unplug the video cable it works perfect on the external video port. When you boot it up on the internal monitor its just white , no file or question mark. Its like the video is not getting through. The back lite works great it even lets you adjust the brightness some said ( I have not tried this but I would think it would). I do have two complete mac air lcd assemblies and the include the video cable and screen and work perfect. when put on these three machines I get the exact same thing, Just a white screen. So what I know is its not the LCD,Video Cable, Not any other plugged in parts because I ran it with just power and video, every thing else unplugged, I don't think its the GPU but that is not for sure. I did go ahead and reflow the intel GPU chip which almost never melts down by the way. Its almost always the Nvidia or ATI chips that meltdown for me.
If anyone has any ideas on this one I would Love to hear them.
Thanks
Randy
The macbook airs are a very weird problem because unlike the normal GPU meltdown of the Macbook pros (which I have done hundreds of (Please Dont put those in your oven
). What I mean the main way you know if a GPU has melted down right off the bat is it will not work on an external display as well as on the built in display. These mac airs Give you a white screen on the laptop but if you unplug the video cable it works perfect on the external video port. When you boot it up on the internal monitor its just white , no file or question mark. Its like the video is not getting through. The back lite works great it even lets you adjust the brightness some said ( I have not tried this but I would think it would). I do have two complete mac air lcd assemblies and the include the video cable and screen and work perfect. when put on these three machines I get the exact same thing, Just a white screen. So what I know is its not the LCD,Video Cable, Not any other plugged in parts because I ran it with just power and video, every thing else unplugged, I don't think its the GPU but that is not for sure. I did go ahead and reflow the intel GPU chip which almost never melts down by the way. Its almost always the Nvidia or ATI chips that meltdown for me.If anyone has any ideas on this one I would Love to hear them.
Thanks
Randy