Hello!
I installed a new battery from ifixit on my Macbook Pro Retina 2012. I followed the instructions on this site.
After the battery replacement my screen didn’t work correctly anymore. When I turn the Macbook on, most of the time the screen is black. Sometimes there is a white flickering. And sometimes the flickering is only during the startup and then the screen works fine again. In rare cases the screen has no issues at all. Then everything else works fine too.
I already did a smc und nvram reset.
I also tried to put back the old battery, but that didn’t solve the problem.
Does anyone have an idea where the problem could be? Are there any other ways of (hardware-) reseting the Macbook?
Kind regards,
Armin