I have an INsignia NS-LCD26A that has scrambled screens with horizontal lines on startup, other times it has a locked up no signal screen that will freeze and unfreeze. This horizontal lines only appear intermittently so I dont know if this could be a bad panel, I was told a Tcon board but I am reluctant to go replacing things if I am not sure. I have pictures of the screens if it helps.

Televison & Video - Insignia - NS-LCD26-09 26 in. HD-Ready LCD TV