I knew it was the connection! but I was thinking cable.After much deliberation and searching and trying out various solutions, it transpired that the mojo usb was causing problems with the connection, it was not the cable itself but the socket it plugs into, i discovered that if i pushed the cable upwards it worked fine so i have wedged a piece of cardboard between the leather case and the cable to give it an upward lift permanently - how long before the socket stops working completely i do not know.
thanks for all you ideas and help
Software, windows, drivers were the least likely culprits.
Your issue is very easily remedied - take it to someone who has a hot-air soldering station. A computer repair shop, TV repair shop, etc.
They can reflow the soldering in 5 mins.
If you are in London, PM me, I'll do it for you.
If you carry on using it as you are, you might crack the connections on the board, and then it would be a bigger job.
Do it now, before it gets worse.
Have you dropped Chord a line?