aio cooler on gpu

I have managed to get all my 4 rgb fans working and connected to a controller. All was well and I had full control of them and all worked great. The next day one of my fans has from 12-3 (clock face) seemingly dead leds. These are thermaltake rgb with aio Any ideas would be great!

Hello everyone. I'm not good at English, so first of all sorry for that. I'm gonna use a Kraken G12 and an AIO cooler on my GPU. I want to use the radiator on push/pull. In this case there are 4 connectors: -1x Radiator -1x 92mm fan -2x 120mm fan Also I want my gpu to control radiator fans...