I just bought a BenQ RL2455HM monitor. I was really excited until I opened the box, connected the power lead and turned on the monitor to see that it is not working properly.
I cannot post any photos to show you the exact problem, because I don't have enough reputation, but this is basically what happens: the top half of the screen works fine, the bottom half of the screen shows the background color and some vertical lines (as if the monitor is showing the same horizontal line of pixels all throughout the bottom half of the screen). This happens even when you turn on the monitor on the BenQ purple start-up screen. This means that the problem is not in my HDMI cable.
Also, sometimes when I power the monitor on, black horizontal lines appear on the faulty part of the screen, then if I turn it off and turn it back on they either disappear or they don't, but they changed place and change in number.
My question is: do you think the monitor is faulty beyond repair and I need to return it or there is a simple way to fix this? Also, what is the most possible reason for such a malfunction on a LED monitor?
Here’s what it looks like: