[help] 5310 no display after repair LCD no light
 

i have got a 5310, b4 the problem is LCD no light,
then i'm going to exchange the inductor beside the light ic,
after change the inductor, LCD got light already but now the problem no display already.
change back to the old inductor, LCD got display but no light,
LCD also change already also same...
any solution can solve this problem???
thanks!!!