plz plz plz help x

[Sonia Wright]

my tv only stays on for 1 hour but if i take the ariel out it stays on

 

[americanaudiophile]

This is a very strange problem. There must be some residual voltage coming through your antenna due to some grounding issue. I would use a ground isolator in between the TV and the antenna cable. Something like this
http://www.amazon.com/Viewsonics-VSIS-EU-Cable-Ground-Isolator/dp/B0017I3K9M