Gtx590 LED light totally off but working properly ? how can i turn it on ?

I have a gigabyte GTX590 its working 100% but for some reason the LED light on the graphics card is off. im not sure why and i want it to be on :( lol any clues ?|||I'll give you a clue. If the card works, leave it alone! You have NO experience in desoldering or soldering.