Razer Blackwidow v3 blue leds light up red

my razer blackwidow v3 pro keyboard is doesnt light up blue, when i light up blue, it light up red, when i light up green and red, it perfectly works, 
i thougt blue leds are died. but if blue lights died, i think it doesnt lit up, but it lit up red, i didnt think it is broken, because it happened suddenly, can somebody help :(
my warranty ended.