New TV Keeps Automatically Cycling Through Input. What Could Be Causing this?

I recently purchased a new TV off of Amazon. It isn't name brand, but the reviews and price made it seem very appealing. Link

Set up was easy, the picture looks great, and it seemed like everything was taken care of.

However, I connected my Wii and launched Netflix. About every 10-15 minutes, the TV switches to the next Input. So, for example, if it is on Composite 1, it will switch to Composite 2. I tried setting the Wii up on Composite 2, but the TV also cycles through the inputs, changing once every 10-15 minutes or so.

I took the batteries out of the remote, to confirm that it isn't a faulty remote. What could be causing this? I have gone through all the settings, the manual, and searched the 100+ reviews on Amazon and can't seem to find anyone with a similar problem.

Thanks so much! Also, if there is a better subreddit for this question, please direct me!

tl;dr: New TV automatically cycles through inputs, changing once every 10-15 minutes. Help!