I have a prima TV wich is about 5 years old and lately when I turn it on it takes a long time for picture to actually appear i have noticed that on colder days it can take up to 8 hours for it to come on warmer days about 5 min once TV is one picture is perfect and it works great this TV is in my room so it can be a pain in the butt if i want to watch before bed cause never know how long it will take what could be the cause of this