Can a TV short out from overuse?

A TV or other electrical device does not short out. It breaks. It is possible for some components to get hot with overuse. Most devices that can get hot usually have a fan or other cooling device to prevent overheating. If the fan malfunctions, things can overheat. If it gets hot enough parts can break down. Capacitors can short, resistors can open up, Transformers and coils can melt or burn out, semiconductors can malfunction, printed circuits can separate from the board and touch other component or wires shorting things out and doing other nasty things. Such things are also possible If the device is old enough and components break down.

I had the same problem happen to me. I wasn't sure if it was overuse or if it was just a shortage from old age. Come to find out, it is possible in older televisions.