Rca on then off by its self

Question

i finally got my rca d52w14 to come on again it worked for couple hours then shut off by its self waited an hour turned it back on then 5 mins later went off again and won't come back on i have asked three or four times for help and i understand i am not the only person asking for help but can someone help me who will actually help and not tell me to check something and then i never hear back from them don't mean to sound B****** . my kids miss there tv and i can't take it to repair or i would PLEASE HELP ME PLEASE!PLEASE