Kestrel Instruments Support & FAQs

we have the Kestrel 4000 and the screen is blank with a scrambled LCD screen. Any ideas on repair? And reset button? Any firmware update? anything else?

This can happen if the memory log becomes full. Please try this:

  1. Take the battery out of the unit and hold down the power button for 30 seconds.
  2. Put the battery back in and turn it on.
  3. Wait several minutes for the screen to clear until you can press buttons.
  4. Then when you can press buttons, go to Main Menu->Memory Options.
  5. Clear the data log. 

This should fix the startup issue you are having.