Why does my TV keep turning off by itself and how can I fix it?

Fred

New member
I have a sharp aquos that is a little over a year old. The other day (for the first time) i set the sleep timer for 30 min and it worked properly. They next day the tv kept turning itself off every 30 min. Ive made sure many times that the tv sleep and the cable box sleep functions are set to off. Ive also unplugged the tv multiple times. However, the tv continues to shut itself off every 30 min.
 
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