SOURCE: Power Surge damage. Suggestions on which part to replace.
I would start looking at the power supply, it's usually a separate board where the a/c line plugs into. In many cases i have seen that the problem you described is from a damaged power supply, sounds like something is shorting causing the power supply to continuously come on and off. I would first check the capictors to see if any of them have blown, usually cylinder looking and sometimes you'll see an X or a K at the top of the cylinder, if it's blown then the top will be bulging out instead of being flat. If all those look good then there is probably a short somewhere else like in one of the transistors, if so you'd be best to just find another power supply board to replace.
SOURCE: Power surge damage during electrical
I'd be contacting my home owners insurance company and local power company.Local power companies will offer to repair for free in most cases.
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SOURCE: Panasonic TH-50PX80U won't work after
Hello
If cable box converter has damaged, there is no question about the main board of your TV. It has been damaged. Before replacing it, you have to check the power supply board also. If the TV has been pluged to power supply, surely there will be fault to it also. We can't predict the exact fault occurs during a lightning, because Trillions of volts are passes nearby. You have connected the TV with cable connection and to the home power supply too.
Just replace the main board first. If it does not hel you, replace the power board too. I hereby send picture of both boards.
The first one is main board and the other is power supply regulator board.
SOURCE: I have a proform 730
Sensor: Unplug the treadmill and remove the motor hood cover. The optic disk and sensor are located either at the end of the motor or the right hand side of the front roller. The optic disk spins between two sensors on the optic switch. The disk must spin freely without touching either sensor. The sensors can be moved by loosening the adjustment bolt holding the switch to its bracket. The switch can then be slid. Center the disk. 
SOURCE: Have an AMANA AOGD2750 oven blew electronic board
Hi As always when working on anything electrical unplug it or turn off main power ,you will need to open his unit up where you say you saw the smoke, the board maybe toasted, if you are good with electrical you maybe able to just replace one small part on the board, it will have burn marks on it i am sure of that , also the board has Part numbers on it if you want me to locate you one much cheeper then you can get it ,,, ( the heat zink almost always burns out first before getting to the rest of the board )
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