Dash clocks not working Help needed

  1. #1
    Ok so I have come across another problem with another set of clocks from 2nd saxo.

    I have clocks in all works apart from speed that was worknig fine up untill yesterday afternoon. It developed the same problems as my last lot of clocks had that the speed MPH decides to have a mid of its own going up and down like a yoyo and not reading actual speed stopping and stating mving up and down like mind of its own.

    Now it has stopped and speed MPH is no longer working yet all other clocks and digital parts are working fine.

    Any idea what this could be at all is this the dial its self or is this the speed sensor that is packed in and not reading to send single from wheels to dials?