Why is display dimming and changing brightness when charging
Macbook Air 13'' Mid 2012 Intel Core i5 1.8 ghz
Macbook Air has 2 and a half year. The screen is dimming and slightly flickering, as though the brightness was slightly increasing and decreasing irregularly without the brightness icon popping up on the screen. It does not affect the colours nor contrast. The battery life is at 0 percent and therefore the Mac runs only on power charger, needs to be constanly plugged in to run. At first I supposed it was the logic board or display issue. However, I noticed that it only flickers when I am charging it at certain places. While plugged into some electric socket it does not flicker at all, with other ones it does. Answer is Much appreciated.
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