Good evening sorry for the delay.
So I am clear are you saying there is now power shown on the fridge display or interior lights, or just the interior lights are not coming on?
Can you advise what you did to restore the water problem, and advise the model of your Panasonic appliance.
If the interior fridge and freezer lights do not come on when you open the door, can you see if the LED located towards the top of the back panel of the fridge is on?
Can you also advise what lights are shown on the control panel, and if the temperature is displayed?