Nokia 5110 not working

Try the following:

• in Settings - General - Communication disable 'Save on send' (send = upload)
  
• paste code into editor pane
  
• remove last line (onInit();)
  
• upload the code (light should come on)
  
• enter into console pane onInit();
  
  

Sometimes the breadboard contacts are not as reliable... use other breadboard connections (shift to the right) / rotate the bread board (by 180 degrees) / place pico and display separately and use wires to connect...