Transparent horizontal lines on A1’s screen

Hi,

i just bought a A1 from MPB. I immediatly noticed horizontal transparent/brighter lines when I look at the led monitor with bright light pointing on it. When the monitor is on, I hardly see them, except if I really look at it from an angle. See photo attached. 
 

have you guys experienced it? I asked on Facebook and I get various answers. Some saying they have it on their A9 or AsIII, some saying it’s a defect. 
 

I also have a A7IV that doesn’t have this. 
 

what do you think? Should I return it?

Thanks!

Wayan