DON'T let simple mistakes ruin your Roku TV picture that you've paid good money for.

It's surprisingly easy to miss out on the very best visuals from your movies and TV shows.

So here are four things you must check to ensure you're getting top-notch picture quality on Roku .

First is the Picture Modes setting, which lets you quickly and easily adjust the appearance of your TV screen.

It's perfect because it requires almost no technical knowledge – but it's very easy to miss.

Roku explains: "Your Roku TV system has multiple preset picture modes that adjust the appearance of the image to suit your preferences and viewing environment.

"Changing the picture mode can provide enhancements, especially given the wide range of input signal types from devices like cable and satellite boxes,

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