AFTER A LIGHTNING STORM MY 37 INCH INSIGNIA TV HDMI INPUT HAS A NO SIGNAL. CAN YOU TELL ME WHAT THE PROBLEM IS? IT WORKS FINE THROUGH THE COMPONENT INPUT.

Hi
Its tuner has been damaged. Lightning stroke will have Trillions of volts when it hit the earth. No electrical houlhold equipent can withstand it. Evan a part of it is efficiant to damage the tuner and other sections of a TV; designed to work with 120V or 220VAC. The induced voltage that came through the cable of by the antenna, surely had damaged your TVs tuner. If tuner has been damaged, the set will not get any signal to process. According to your description, all the other sections are working now. Otherwise you won't get any screen at all. Get it repaired by any experienced service technican or by the Authorised Service Center for Insigina at your town. If you are able to, you can do it yoursef. But after tuner replacement, some adjustments may have to be done. If you have knoledge in digital electronics, measuring equuipments, and a concept of soldering, dare to do it. Otherwise it will be best to get it repaired by any experienced service person. OK