All TM1000's, AR8000's, and AR600's are DSMX even if the label says otherwise. The technology was in them before we announced DSMX. So yes, your TM1000 should work with your DX9.
Are you binding the receiver and TM1000 to the transmitter at the same time? This is necessary, as the TM1000 simply listens to the negotiations going on between the rx and tx.
The other thing to keep in mind is that the TM should be near the rx, and they should be about 6' from the tx.
Of course it is possible that something happened to it, in which case it will need to go back.
Andy