Unit hit by lightning original main board no sig replace now bad pic

Replaced main board with 2 different board both show bad picture and can’t read menu, original board will clearly show menu, all inputs sshow no signal

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Patrick Henderson this is a confusing question for an old guy like me. Let me see if I can clarify this. you repalced teh main board but have a bad picture. What does that mean? Bad how? Does your TV say no inputs/signal connected or is it just that no matter what you connect you still do not have a good picture? You will have to tell us the make and model for your TV so we can at least try and help you. Also post some good pictures of all your boards and what your screen shows (need to see what you mean by bad picture)