Television and Home Theater

I purchased a Durabrand 13 inch TV Model #DWT1304 eight months ago at Walmart and as of 2 days ago it will not turn on.   Being the TV is only 8 months old I called the manufacturer to tell them of my problem since there is a 2 year warranty on this TV.  (Parts 1 year and Picture Tube 2 years). The kicker is that labor is only good for 90 days. Any chance of saving this TV? Could it be a blown fuse?

First off i would just like to say sorry ahead of time if this has been mentioned before. I did search first , but did not find an answer to my problem, so I thought i would try a new forum. Again i am sorry if i mised this some where else. Ok i will start at the begining. I have a Mitsubishi WS-65511 wide screen projector TV. About two weeks ago it started to get these very faint black lines on the picture. What is weird is i noticed write away that the picture i was recieving from comcast was fine, but it was the on screen display from the TV its self that was weird.

I contacted Hitachi @ yellow ring on screen. They said take to certified repair. They said light engine was defective. I called Hitachi and was told that since I had no problems for the first 2 years, they could not help in any way. I was willing to pay for labor but now look at worthless 2.5 yr old set. I have some electronic experience. Can I do this myself?