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2 The Dreadded White Screen @ Boot
Hi, So I have a MBA 2012 A1465 that suddenly ONLY boots to a white screen.
I have tired these steps:
1 - Disconnected Battery and reset SMC
2 - Reset NV/PRAM - SHFT or CMD+OPT+P+R - Nothing Happens screen stays white
Laptop does not restart or lights on the charger do not change colors.
3 - Recovery Mode CMD+R - Nothing Happens screen stays white
4 - Verbose Mode CMD+V - Nothing Happens GREY screen.
5 - Shift Key boot to Safe Mode - Nothing Happens screen stays white
6 - "D' Apple diagnostics - Nothing happens screen stays white
7 - Swapping out the SSD with a known working SSD with the same OS (Catalina) - Nothing Happens still white. (The original SSD is working fine on another machine)
8 - Reconnecting & cleaning the screen & keyboard connector
9 - Cleaning everything inside the said unit / reconnecting all cables etc /
10 - Trying another screen - Nothing Happens still white
11 - Changing batteries - Nothing Happens still white
12- Booting with no keyboard connected - Nothing screen stays white
When the unit is powered off and I connect the charger it powers up by itself.
Connected to an external display at boot has no effect (No signal) odd/
I guess it is once again a logic board issue somewhere along the line.....
The only thing left to do that I can think of is to put the logic board into another same year model using that models components.... maybe it could it be a problem with the keyboard though it seems to be fine? There was never any water damage, internally looked clean, Asking you guys if you can shine some light on what maybe is an easy solution or am I once again to fear the worst.
- Command (⌘)-R Install the latest macOS that was installed on your Mac.
- Option-⌘-R Upgrade to the latest macOS compatible with your Mac.
- Shift-Option-⌘-R Install the macOS that came with your Mac, or the closest version still available. (I get a grey screen with a line down the middle)/
*
Image of the internals of the 2012 below - Cheers in advance!
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12 commentaires
@livfe do you have your board removed yet? Can you take some large, well focused pictures (both sides) of the board? Post those with your Question please. I am just an old tire mechanic and not a brain surgeon, so I could definitely be mistaken, but If I remember right, and I am old and forget easy, there should be an IC that can cause the same symptoms as you are describing. No, it is not the CPU ;-)
If you are going for a replacement board, then don't worry about it. It'll fix that too :-)
Ajout d'images à une question existante
par oldturkey03
@oldturkey03 OK Added an image of the internals, hope it is clear enough? What do you mean by "IC" ?
par livfe
@livfe let me see if that is enough to identify the IC. Integrated circuit = chip
par oldturkey03
@oldturkey03 Hi any update on this IC? Requires some technical skills also I guess for sure?
par livfe
@livfe not yet. Yes, I t would require some soldering :-) any chance you can do a focused close up off the Left side of the board to include the DP connector? Remove your display cable as well.
par oldturkey03
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