I had a similar problem, except I had sound and with a flashlight I could see audiovox
when i turned it on and I could see the video when I put a DVD in. It is hard to see even with a flashlight so you have to look closely. Well, I researched and investigated what might be the problem because I was upset that I had the TV for less than two years. Everyone was saying the inverter was defective. Apparently the inverter is what gives the LCD screen the back light to see the video. So I called audiovox
and found that thier
part's selection was only a power board and a remote control
for this TV. I asked them if they could get me an inverter and they did. With shipping cost it was approximately $150.00. They ensured that I know that there is no refund on this part (which is common for electical
parts). So I took a chance on it not being the right part for the problem. I replaced the defective inverter myself and it worked. It solved my problem. The inverter is a circuit board
that plugs in and has a few screws to hold it in place. I had to remove the back cover first and a couple of brackets inside the tv to get to the inverter and replace it. There is a quite a few screws so I recommend writing down where each came from for easier reassembly. I hope this helps!