X-Axis cable has broken a wire where the cable goes into the motor. I have purchased a new cable but being new to these machines I have NO idea how to undo it! I have taken the metal plate off the bottom and can see the cable going onto the PCB but can get no further! I have take onto loads of screws and bolts but nothing comes apart!HELP PLEASE! has anyone got a video or can anyone advise me on this. It's so annoying that you cannot get it apart!!!