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Hi, I have a Macbook Pro Retina (a1398), and I need some help. A few days ago I closed the Macbook lid, it went to sleep, but the I opened it back, it never came back on. I tried to force a restart but the power button did nothing. It seemed like the mac was dead. I opened the bottom case, disconnected the battery, and connected the power cable and the mac started … I can ear the mac chime, but the screen turns off after a second and it never shows any image. I did a PRAM and SMC reset and the problem still persists. I connected a external monitor and I can see everything on the external screen. I tough it was a LCD issue, but then i noticed that the keyboard and trackpad stop working a few seconds after the OS boots. If I connect a external keyboard and mouse I can work normally. So I believe that my Mac thinks it has the lid shut. That’s why it shuts down the screen after a second or two when it boots, and when the OS boots, it shuts down the onboard keyboard and trackpad. I don’t know if this mac uses a reed switch or hall effect sensor. I searched Google but I wasn’t able to find anything about this macbook model, so i could replace the defective part. Can someone please help? Thanks in advance. Update (03/19/2018) Hi Dan thanks for your reply, The bottom cover has been off since I started having these issues. Here is the result of CoconutBattery (yes, I let the battery fully discharge on as a test).
While it may not seem it you likely have a battery failure. What happens is the battery swells up pressing on the keyboard & trackpad. Run this: CoconutBattery and paste a screenshot here for us to see. As far as the display I’m suspecting the backlight logic has an issue but before we deal with than lets pop the bottom cover and see if releasing the stress helps things. Update (03/20/2018) mmm… Well the battery does look good and the fact the terminal command states the sensor is in the closed lid state when it should be open does point to the Hall effect sensor being bad. Sorry to say I’ve not needed to replace the Hall effect sensor in the retina systems yet. Apple does tend to hide them well ;-{ In reviewing the schematics for the early 2013 model (I don’t have the late 2013 model) here is what I found
I’m not sure where the sensor is located its either on the uppercase or its in the lid. In reviewing the possible locations I can only surmise that one of the speakers has it or the display lid. I would recommend you try to locate the enabling magnet using a paper clip running it along the lids display sides. Then carefully fold the lid down a bit so you can translate the location to the uppercase. I can tell you the front edge has the magnet & plates to hold the lid shut. Update (06/12/2018) Here’s the location of the Hall sensor on the main logic board:
Same issue here (rMBP 13 Early 2013), even worst with the display, together with the keyboard light, blinking from on to black. As in your case, the keyboard and the trackpad do not work, and the clamshell status is often switching from ON to OFF. I would like to add a contribution: replacing the whole topcase (display, and so on) did not solve the issue. If one cannot replace such a part, does anybody know how to disable such a lid sensor via software? If not by disconnecting some cable inside? Thanks.
Hi all, I have the same problem in a macbook pro 2013 A1425. Did you solve the problem? Fans always runs at 8000 rpm. Please help me
