Tv struck by lightning

Contact the authorized service center for Panasonic.

Fault to its main board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

Your probably have power supply damage, but lightning strikes can do major damage in all circuits.

Before spend $$ on replacement boards, make sure anything attached to it is powered off. Unplug TV for 5mn to 15min. Plug back in and it should power on. If not leave unplugged overnight before spending on a replacement board. We have to do this 2-3 times per year when someone forgets to turn off auxiliary components (receiver, DVD, cable box, etc) first. It has always come back on.

That will be real expensive repair jobs, it can be from the power supply or from the backlight inverter circiuts. I would leave it unplugged.
It will cost too much to have it done at the repair shop, it is only 4:3 screen also. You may want to think about it first.
Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.

Yes!!! When going out for extended periods of time unplug TV's from a/c outlet AND dissconnect broadcast signal from TV(cable,sat. etc)
Isolation is the only sure protection against LIGHTNING DAMAGE!!!
I advise purchasing protection from your' service provider.

Good Day;

Two things normally happens after a L storm:1.) One must unplug TV for 5 minutes, then plug back in. 2.) Main glass fuse out, will be near a/c cord. 3.( Power regulator IC may be out. Try these first.

Good Luck!

Try calling up a Menu for Picture on the screen with your remote.  Also check that it operates the TV and not the VCR or DVD player.
Good luck.

If it was struck by lightning, the surge would completely fry the insides of your TV. Your TV probably won't work anymore and you may have to consider replacing it. Some TVs have accident warranties so something like this could be protected, but if not, you will have to purchase a new one.