Hello.
I have problem with iMac (Retina 5K, 27-inch, 2017). During work, my screen sometimes dims to such an extent that I can barely see it on the screen. When the screen is brightened, the screen bar becomes approximately half light. Then it just shifts - but doesn't brighten up. Does anyone know what this may be about? After some time, the screen automatically returns to normal (brightening / dimming surprising).
I have problem with iMac (Retina 5K, 27-inch, 2017). During work, my screen sometimes dims to such an extent that I can barely see it on the screen. When the screen is brightened, the screen bar becomes approximately half light. Then it just shifts - but doesn't brighten up. Does anyone know what this may be about? After some time, the screen automatically returns to normal (brightening / dimming surprising).