Chosen Solution
When I turned TV on, it displayed blue screen, I connected dvd with one connect box, I have sound. When one connect box is disconnected, sometimes I see half-displayed message showing to reconnect one connect box with different multicolor vertical line flickering over the message. Then the whole screen fade to blue. sometime it displayed the blue outright and stay bluish, when connect dvd to it, you could notice change of dark blue to light blure as the movie is playing. Please help
Hi @effortenergy, It seems like it is a mainboard problem more than a tcon board problem. It is more likely the mainboard as it that controls the signal output to the screen via the tcon If it were a tcon board problem you would have no video at all every time or vertical lines from the start rather than the logo being OK every time? with no problems then vertical lines and after that a blue screen. Also usually a solid blue screen indicates no signal received on a lot of TVs and the logo works because that image is provided by the eeprom on the mainboard. Best I can suggest is that you order a replacement mainboard from a supplier that accepts returns for a minimal restocking fee to reduce the cost to you if it is not the problem.
This sounds like a peripheral problem, meaning, a DVD player or whatever there is hooked up to it, has a video issue, or i guess it could be the connection ports on the TV itself, try replacing the video cables then respond
