Advice with LED-Backlit Monitor

[Flameo]

Okay, so basically I had a normal LCD for quite a while it, then the screen randomly started getting a big white streak across the screen. So I used the warranty a year before ending.
They took it away, a week later, they tell me that I only have £109 to spend from their store (the monitor I had cost me £160); which left me with literally only two choices, essentially only 1.

http://i.imgur.com/ELKTv.jpg
Old monitor was nearly pitch black

http://i.imgur.com/D47Mh.jpg
Inverted/deep colours at the top, washed-out colours at the bottom.
This is when I'm centred to the screen too, not under or above it.

Is this normal for an LED-lit monitor, and how are the specs? It's an ACER S220HQLBBD.
I want to see what other people think about the monitor and pictures, before I rage at the store on Monday.

 

[Axeia]

Might want to post a link to your wallpaper as it's hard to see what's wrong with the 2nd picture without knowing how it's supposed to look like. First seems to rather unequal backlight distribution, it might dissapear or at least become less severe if you turn the brightness down (is it still at factory settings? that usually means the screen is far too bright).

 

[Flameo]

I actually have the brightness on 10% right now; in an attempt to make the black look like, well... black. Though that isn't doing too much sadly.
http://puu.sh/1cm2M

The only way to actually see the true colours is to literally move my head around the monitor, otherwise anything out of the exact centre is either dark or washed out.
I guess my main question is really just, is this is common with LED-lit monitors? I've never had these issues before with any other LCD screen.

 

[Axeia]

Colours being horribly position dependent is common with TN-panels regardless of backlight type. A led-backlight doesn't change much aside from a maybe slight blue hue and the colours not changing over time (instant on - no warm up time).

Time to get a monitor with an IPS panel perhaps?