What? Unless you press your eyeballs to the screen your tv is nothing compared to the sun. It also isn't overhead. Your eyes are setting your circadian rhythm by what time of day you on average experience the brightest overhead light.

Bright overhead early in the morning and dim overhead in the evening also help set anchors.

Dim your overhead lights a bit and forget about the TVs light. The thing about TV that keeps you up is the content. An exciting paper book would also keep you up.

Think about it this way, we evolved staring at a campfire most nights. Brightest thing around after dark but below eye level with the overhead light of the sun dimming out.