Hi and thank you for using justanswer.To answer your question:From your description of the problem you seem to have a power supply circuit fault.In these models it is often caused by vented capacitors.So the next step would be to remove the back cover to investigate.If you want to do this i will help you along.
Hello can you see my last reply ?
hi sorry yes i got your answer, the tv is covered under warranty so i'll have the warrant company look at it if the back needs to come off. thanks for your reply.
That would be the best option in that case.
thanks for your help.