"Its not all "unicorns and fairy-free," it costs money to ship it there and time/work to pack it up to send it on an international journey as well as the time without a transmitter".
So for the $30 it will cost to send it back, you can't be bothered? + time without a TX, er.... it doesn't work!
I cant see the logic there, at all.
You can't test a FET with a multimeter (def not this one as it's got two devices in one package) I could go on, but wont....
I've tried my best, I'm not going to force you to send it back.
Good luck.
Stretchy.