Thanks, it had been playing up for a while now and like any intermittent fault you can only find it when it is in fault. It’s all sorted now so on with more printing.
Using a sock or tube where a cable goes through a case often helps spread the movement along the cable and hopefully reduce the direct constant bending in one place. Unfortunately there are many to and fro movements that it still breaks after a while. Hopefully you get or have hot yours repaired