K750i Keypad lights and camera light problem

Dear friends,:(My k750i keypad LEDs that are at sides of joy stick are working but :(the two led lines that are verticaly arranged at the centr of keypad are not working. secondly cammera lights which are on the back side are flickring when i light them.they keep on flickring and dimming :(.but when i use them as a flash while taking photo they flash up properly.
kindly help me out how to light all key pad lights and how to stop the flickring of back cammera lights.ill be thankful to u all.waiting for ur reply..:)

Mobile Phone was water damage?

no there is nthing happened like that no water damage nthing. only two keypad leds tht ihve mentioned above are working but the two vertical rows of leds are stopped working .and the back camera lights flicks and now one of the 2 is totally dead:(. only 1 get lightened up when i use it as a camera flash.

hello.....can tell me somebody how can i change the case of my k750 (tuned to w800) ?

iam still waiting for my solution

i also have that dead keypad leds.never had been water dmg

my problem is the light only one is ok.the one below is broken...