Answer for MXQ box keeps shutting down my TV during movie play…why?

I have a Coolead MX3 box. It randomly cuts out. Sometimes it turns itself back on after approx 2 seconds and sometimes it doesn\’t turn on again at all.  Strangely, it ONLY does that whilst using on my LG Smart TV. It\’s fine on my other (non smart) one.  Its been doing this for around 10 months. It\’s driving me crazy!  Please help me.