MiniDisplayPort to HDMI adapter not working OK, so I bought an MiniDisplayPort to HDMI adapter off dx.com and it doesn't work, before I angrily demand a refund I want to know whether there is anything I can do to get this to work.

I have a 2013 13inch MacBook Air 

I have heard that I probably should have either got an official apple (sponsored) one (for 40 dollars) or instead of Mini DisplayPort to HDMI get a Mini DisplayPort to DVI and then a DVI to HDMI adapter.
It could be the adapter?

I bought mine at Monoprice for $6.82!

Notice it says with Audio support in the title.


  Mini DisplayPort to HDMI® Adapter w/ Audio Support Product Number:
  5311


and it works purfectly on my MBA with the Sharp TV.

It is not worth for $4, but if you must, look in your about this mac, or your System Utility display if it shows the monitor/tv you just connected.