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It could happen yes it would depend where the strike entered the TV. Not all lighting strikes hit on the electrical lines, on a TV they can come through the cable, as well as a antenna if you have one hooked up.
Unfortunately modern televisions and monitors are full of electronic semiconductors of which many are likely have got destroyed along with your original power supply during the storm. A nearby lightning strike will send high voltage spikes down aerial cables as well as through socket outlets. If you have contents insurance you should be able to claim for a new monitor.
The power supply regulator section of your tV has the fault. The set need service. Contact any experienced service technician, as it will be dangerous for an unexpereinced person to work with the power supply regulator circuits.
Just try with component input, and see whether it works fine. If it works fine with component input, the tuner section in your TV has got damaged. Soem Vizio sets will have dual tuner; one for analogue and the other for digital. Lighning stroke will damage the tuners first, than any other components inside a TV, because it has been alway connected to cable. Check the component video. If it also does not work, the mother board of your TV is faulty. Some type of fault will be repairable. If the fault is serious, you have to replace its main board istself. OK.
This Proscan 19LA25Q has no relay to make any clicking sound that I can think off. The common problem with this model is the fail backlight inverter board. Did you see the screen flashes on for a second? You should also check the output voltage of the AC adapter, it should be 12vdc with load. Check the surface mounted fuse on the inverter board (this board is really hard to find).
Basic LCD monitor and LCD TV troubleshooting guide:
Typical reset sequence is: unplug the set, press the power button a few times ( Yes, with the set unplugged ). Then, hold the power button down and at the same time ( maybe with your other hand ) plug the set in. If that doesn't do it, there may be a button marked reset on the back of the set. If there was a lightning strike nearby, your set is probably toast. The antenna or cable brings it into the house.
they have a 5amp fuse ,if the fuse was gone there would be no turn on at all.the set is cycling trying to fire but there is a fault stopping it ,it called three strikes your out, the set is made to do this, you require service.possible horizontal or power supply,problem. ask for a est,