i recently bought my first smart tv..(westinghouse)...had an older tv ..and it keeps shutting itself off every few hours..especially at night..i am new to these new tvs so am not sure..i checked my settings and saw that my sleeper mode is off..so it is not that...just not sure if this is normal and that i cannot do anything about it or if if there IS something i can do to turn this feature off...and if it IS normal,need to know ..will it turn itself on in a while(because i always turn it right back on)..if i wait will it turn itself on..?..or is this a defect?..please get back to me anyone