HTC 10 stopped connecting to TV

[Android Central Question]

so I bought a Sandstrom USB type c to HDMI adaptor to link my HTC 10 up to the TV, got it out the package and plugged it all in, didn't work. I then tried it on a TV upstairs and it worked straight away, brought it back down and tried again on original TV, was working fine, no issues at all. Watched a film, unplugged to charge phone, next time I plugged it in it worked no problems for all of around 5 minutes, then it went off and stopped displaying on the TV. Since then I've been unable to get it working. I've only used the adapted twice so am slightly confused as to what happened. The phone registers it when it's plugged in but doesn't register it as video out onto the TV. Is there a knack to these things, could it be an issue with a setting on my phone or something? Any help would be greatly appreciated I'm at a complete loss.