Thanks
Swapnil and
redwan hasan for your response.
@Swapnil
This is a LED back-lit panel, so don't have CCFL inverter, but have a LED driver unit in a separate PCB. I have checked both the HV & LV side, and found voltages till the big capacitor (c605). That is, its okay till the full wave bridge rectifier. It's possible, the switching circuit for the ferrite core transformer is gone, or the transformer itself is gone. But, there is no way to test in-house all of these. Here I labeled the snap for better understanding.
Yes, thanks, I know that. So for handling I discharge this with a flat screwdriver always.