I have an M3 Max 16-in MacBook Pro which I regularly connect to a 28-in Huawei MateView display.
This afternoon, during a regular working session, the external display turned black (no image). Moving the pointer up beyond the menu bar worked fine — the pointer disappearing beyond the built-in display — and macOS (15.5) sees it just fine in System Settings and in all other relevant places.
In the past, it sometimes happened that, plugging the display in would be unresponsive. This would be solved quite reliably by either (a) unplugging the power, wait a bit, plug mains again or (b) keeping the power button pressed for 10-15 seconds until the display would reset.
As you may guess, these did not work today.
A Reddit post shows plenty of users with similar issues and blame a potential motherboard overheating issue: if that were the case, shouldn't the display turn off completely? Why is it clearly awake but not getting the signal from the MacBook Pro?
I tried with different cables and also with different Macs, same result: it shows the desktop for a fraction of a second and then turns black.
Thinking that the Macs could be wrong for some reason, I tried to turn it on without a connected device — a thing that this monitor can do during setup as it supports WiFi connection to Huawei supported devices — but nothing, it turns on for a fraction of a second and then goes back to black.
Bought in late 2021, it is out of warranty and repairs would cost almost as a new display so, at this point, I am only interested in being sure I have done everything in my power to either restore it to life or to understand what happened. Any advice on this will be greatly appreciated.
Thank you.
This afternoon, during a regular working session, the external display turned black (no image). Moving the pointer up beyond the menu bar worked fine — the pointer disappearing beyond the built-in display — and macOS (15.5) sees it just fine in System Settings and in all other relevant places.
In the past, it sometimes happened that, plugging the display in would be unresponsive. This would be solved quite reliably by either (a) unplugging the power, wait a bit, plug mains again or (b) keeping the power button pressed for 10-15 seconds until the display would reset.
As you may guess, these did not work today.
A Reddit post shows plenty of users with similar issues and blame a potential motherboard overheating issue: if that were the case, shouldn't the display turn off completely? Why is it clearly awake but not getting the signal from the MacBook Pro?
I tried with different cables and also with different Macs, same result: it shows the desktop for a fraction of a second and then turns black.
Thinking that the Macs could be wrong for some reason, I tried to turn it on without a connected device — a thing that this monitor can do during setup as it supports WiFi connection to Huawei supported devices — but nothing, it turns on for a fraction of a second and then goes back to black.
Bought in late 2021, it is out of warranty and repairs would cost almost as a new display so, at this point, I am only interested in being sure I have done everything in my power to either restore it to life or to understand what happened. Any advice on this will be greatly appreciated.
Thank you.
