Magnavox Z7MT5005D/37 blurred screen?

Its a 27in SDTV and when it was first bought it worked perfectly for about 5-6 months and then it started randomly turning itself off so my parents asked me to look at it. I hooked cable up too it powered it on and sat there for a few hours watching it waiting for it to power off. Never did it. I turned around to get a drink and about 2 min later walked back to It and the screen had turned slightly green and was completly blurry, I couldnt even make out the channel numbers.

Im wondering if its a bad tube or somthing simple that can be fixed so they dont have to throw it out. Model number is in the subject but here it is again, Z7MT5005D/37.
Thanks.