Help about greddy v2 gauge

[Aripug]

Ciao to everybody
I've bought new 3 gauge, when i fit them into my car...2 temperature gauge and one pressure gauge.....two gauges are ok...one gauges isn't....it has the illumination for an half of his surface....
The gauge are greddy V2, i like them very much, but i'm really disappointed about that...they are new, but one of them doesn't work fine.....
I can find some led replacement for this gauge?
Thanks a lot for everyone who can help me
Sorry for my english...i hope you can understand my problem..
Ciao!
Arian

 

[Aripug]

Pictures of the problem...

 

[oly]

it is very easy...just dismantle it...it got 2 light...i change both of them...with a very bright one...size of the light is just a lil bigger than rice...cost me rm 5 per piece...very very bright...