On line tv repair help

[gagemay]

was just given a 72" magnavox HD tv, after 30 min running it goes out, no picture. Let it cool down turn it back on and its good for another 30 min. any idea

 

[WR2]

Only watch 30min TV shows?

Give back the malfunctioning TV?

Call TV repair service?

Think that pretty much covers all your options.