tv stopped working..

[aidynphoenix]

got a television from a neighbor. she told me it works "sometimes"
so i brought it home and pluged it in.. it worked just fine.
now after a few minutes white lines started appearing horizontially across the verry top of the screen.. after a day or so.. it just wont turn on anymore..

does this sound like it might be something that a noobie could fix if he knew what to look for? or what might be the culprit component?