Samsung UE32f5500ak faulty Sharp T-con board.

[bonesy]

Hi,I've got the above model Samsung,fitted with a Sharp T-con board,blank screen,back lights ok.Good signals if scarted out.
T-con is RUNTK5351TP0055FV.I've had a few of these in 40" sets & replaced with new from CHS ltd,but they are exspensive at around £52,also not cheap from e-bay.Does anyone know,is there a common failure with this board?Can they be repaired.I can only see one fuse & that's o.k.Many thanks John.