Flashlight doesn't work but camera and buttons works perfectly

Hi! I have iphone SE and I was changing my housing space and every single piece of it besides logicboard. Everything works great besides flashlight. it’s not working when im opening camera or trying to turn it on in menu. I have two cables with flashlight but in one upper volume button doesn’t work and flashlight in otherone that I insternt now only flashlight doesn’t work. I’ve tried reset, update my iphone and retore to factory settings. Nothing worked. Please give me some advice what could be the problem.