If your TV does not have a blue light filter you can change your TV. Anyhow the TVs with the blue light filter do not totally reduce the effects of the blue light. They reduce the effects up to a certain amount. If your TV does not have a blue light filter and you are constantly noticing the symptoms of the blue light effects you should definitely think of replacing your TV with a new one. In the longer run, they will harm your retina leading to major eye diseases. It is very much recommended to you to think of buying a new one.