Nexus 6 smd broken component

Hi, some time ago when i was dissasembling my Nexus 6 due to a camera replacement, i accidentally broke an smd component below the camera that is part of the screen well it only detached one pin ftom the two it has so i suited it in his place again and attached back the yellow transparent tape it has, i proceeded to reassemble the phone and all went good except when i low the brightness to certain point it starts to show Green lines and distortion but at a normal ir not so low brightness there Is no problem, Also i noticed an high amperage consumption and consequently a low battery duration i suppose it happens due to the broken component and want your advice if i should weld it again, it is very small and Is surrounded by many components as the same i broke, should i use heat gun? Or a soldering iron ? Tin welding ir liquid welding, or i just should heat the welding the component has and set it again un his place? There Is a photo of What im talking about (the photo Is from a broken screen i have but it shows the components)