Question 55" Seiki 4K TV

Jul 31, 2019
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Hello, I have purchased a 55" Seiki 4K TV. When I turn the set on the screensaver comes on for around 10 seconds then turns itself off then comes back on again. This will continue too happen for at least 10 mins and sometimes won't come on at all. I have been advised too download the latest firmware for the TV but it is no longer available. The Model Number is: SE55GY01UK. Please help.