Problem with dual-led flash. Please Help!!

I've done all kind of wipes and i've tried different ROMs but I can't solve this problem. The dual-flash stops working using the camera or torch. All hardware tests are correct, and i've opened the phone to look for dust or something like this but it's ok. I show you in this video, for example this time it happens with camera but other times it's with torch, and often occurs before. Can anyone help me?? Thanks!!!

https:// vimeo.com/ 169108877

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