Heated Bed trouble


my original Zeepro heatbed stopped working and I need to find out the reason and how to install a new heated bed. Sadly the info on the wiring and other details from another post regarding building a custom heated bed, are not available anymore, as the pictures are not loading anymore.
So hopefully someone can assist me in:

  • whats damaged (simply no heating anymore; but temperature reading works)
  • wiring, mounting and installing a new heated bed (I have a MK3 aluminium heatbed ready)
    Many thanks