Has a similiar issue with my 3GR.
I rang Ripmax technical and they suggested a few things to test, eventually they diagnosed it having a signal strength issue and it had to go back for a new board inside the transmitter.
They did tell me to check that the coax hadnt come away inside the transmitter first so it may be worth checking. (just plugs in on the 3gr, not sure about the VCS)
Ripmax technical are absolutely brilliant!
