yesterday i installed white lcd backlight which i received from hobbyking...
BUT THERE IS A STRANGE PROBLEM
the backlight is blinking and the speaker is humming faintly when the power swicth is off !!!! 
Please help me..
thank you in advance....

Did this problem get fixed?

yes i fixed it....

What was the problem? And how did you fix it?

there was a short circuit in the backlight board...

ok. Thanks