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This device does turn on just fine with the battery connnected.
Now if i connect the charger in one of the two ports it shows me 5.2V and 0amp.
On the other one it doenst even show me a voltage.
Without the battery connected it has 5.2V input and approx. 300ma of current consumption on both...
Is there a guide on how to disable the dedicated grapic chip on newer (4k / 5k) Imacs?
for example 820-3299 has the same Gmux chip as the 15 inch retina macbooks.
I believe its possible.
has someone done this already?
Okay, so I have done the GPU bypass / Disable. It seems to work now from internal graphics. Tho i still have a problem with the bypass. If i close the lid it goes into hibrenation. display turns off and so does backlight. If i open it up again. it shows me an image but no backlight. I have tried...
820-3332 once had a short on Q8961. After replacing it it worked fine. But just for a while.
Q8930 now has a short and it does not turn on. After replacing Q8930 and U8900 at the same time it had fans-in again.
but no image :(. Did I fry the GPU? measuring it showed me that atleast it has no...
Im currently working on an 820-01041 wich boost to 20v and draw approx. 1.7A. Fans spin up normal for around 10 seconds. then the fans do a burst and the Macbook restarts.
It had minior liquid damage near j5100, u5104, . I have already tried:
- Disconnecting everything except battery. (since it...
Thank you. We've tried it again with a cleaned ME region and while it did manage to boot into an installation media, the installation of High Sierra took ages. The system now only boots to 90% and stays there indefinitely.
The board powers on fine but gets stuck with around 70% on the boot progress bar. The fans also gradually start spinning to a far higher RPM than normal. After a short while, it then simply reboots. Alt + D doesn't show any issues.