mona1991

Hi All, I've had these cameras since 2015 and since last week I've been having problems with one of them, concerning the image. they're analogue cameras (not wifi linked) Please see attached photo (sorry i took screen shots of my tv with my mobile phone). It's been like this all the time during the day and night (in night mode). there's a lot of distortion at night (sorry I haven't taken a photo but can do if necessary). I've cleaned the lense, with lense cleaners but no difference. i'm not sure if i can open up the camera as there aren't any obvious screws at the front. Does anyone have any idea what this problem is and what i need to do to fix it please? Thank you in advance, Mona