LG Plasma Black Lines Across Entire Screen

[therobfather3]

I've got an LG LCD 47LD450, and it has little black horizontal lines across the entire screen. I've tried both HDMI outputs, and one doesn't work (but it hasn't for a long time), and the other is the one I've been using for months with no issues (until now).

The lines are not moving at all, but they do persist through menus, whether I have the HDMI plugged in or not.

I'm guessing this is going to be a screen issue, but I thought I'd post in here the hopes that maybe it was more of a t-con problem.

Updated with a pretty crappy quality picture, but I think it should get the point across.

http://i.imgur.com/aHfVZ77.jpg

That image is just a plain white picture I found on Google.

 

[James Mason]

I'm willing to bet it's similar to this, if the inputs have failed/are failing: https://www.youtube.com/watch?v=k2QpYJp6MU8

 

[therobfather3]

I'm willing to bet it's similar to this, if the inputs have failed/are failing: https://www.youtube.com/watch?v=k2QpYJp6MU8

That's actually the first video I watched while looking into this. What's weird is the tv randomly fixed itself for about twenty minutes before happening again. I'll try the t-con first, hopefully that's the issue. Thanks James!