Vizio M420nv LCD TV Black Screen
Its my buddies tv, there was a lightning storm and tv no longer powered up. I replaced the power Supply board and now the vizio light goes from orange to white.. we get power...but I get no picture and no backlight. I Have yet to check for sound, but I'am thinking in replacing the LCD controller board. Any suggenstions??
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Product Troubleshooting for m420nv 42 in. LCD HDTV
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Lightning can do extensive damage to electronics equipment especially flat panel TV's. I would really recommend a professional diagnosis instead of board swapping. You could have several boards that are damaged!