3DS XL turns off when pressed in a certain place or knocked/nudged?
I've been having this problem for a while now, but only just thought to ask a question about it.
So I have a 3DS XL which was bought for me on Christmas day, 2013.
I was forever dropping it (Bare in mind that I was 8 or 9 at the time) but I never thought anything would happen.
Now here's the problem, sometimes when I accidentally knock the screen or the whole system, it turns off - but there's also another thing. If I press (Gently or hard it doesn't matter) the WHOLE system just turns off too. It bothers me as it resets the date and time at the same time.
Now I can avoid the problem by not knocking it or touching the area, I would just like an explanation of why that's happening.
Thank you for reading.
P.S: I know it probably doesn't matter but one screen is darker than the other.
Picture(s) of the area I can't touch or it'll turn off: