little screen daefault on my blade

[Guest swisstourist]

i am the only one maybe, got a blade in switzerland, grey, GEN1, seem to me it ha s a default on the screen, on the top right, some light are leaking. i see it only when the screen is black.

same thing happened on the ipad2.

it s not disturbing, unless i watch movies like on you tube.

well i will not bring it back for a 120 francs phones, but would like to know where this default come from? screw too tight?