I'm sorry to hear that you're having this issue.
Unfortunately, the best recommendation I can make is to have your unit inspected by a technician. I'm not aware of any setting or fix that would improve this symptom.
My husband has commented that the tv has been turning itself off but it hadn't done it with me. This morning I turned it on and it makes the little clicking noise like it's going to work then will turn off before the screen lights up and does this continually so I have unplugged it. Any suggestions?