5D MARK III LCD screen blinking
 

I notice when turning the mode dial to C1,C2 or C3 which the LCD had no preset to turn active, it start to blink sporadically ... Mode dial from A+ to Bulb is fine.
There was no display ON but the LCD is active, very dim, the only way to stop the blinking is to press any button that turning the display ON.

Later I found out by resetting all camera setting under Set-up 4 ( yellow )
[ clear all camera setting ]

The issue solve but not for long.

When I gradually set back my camera setting, I found one of the setting cause the LCD to start blinking as I turn the mode dial again..

Is under Set-up 2 ( yellow )
[ LCD brightness ]

By adjust the brightness of the LCD regardless Auto or Manual.

Any 5D MARK III user encounter this issue ??

Current camera firmware is version 1.1.2, maybe a new firmware can solve this issue ??

Cheers !