Problem with MZ-RH1 plus Art Phantom plus Rode NT-4

["Andrew Carter" standlynch]

I was recording this morning. Everything working correctly, then after
a change of location I restart and suddenly its as thought 95% of the
gain has vanished. I checked the connections and cant find a problem,
and in the end give up and return home.
On getting the recording gear out it (of course) is working normally
again.
This is the second time this has happened with the Rode mic - has
anyone any suggestions as to what might be happening? So far I have
not had a similar experience with the pair of ME62's I've used hooked
up with the Art.
Thanks
Andrew