Please try the following to resolve this issue.
1. Check inside the dirt bin area for an on/off switch and make sure it is in the "on" (down) position
2. Soft reset Neato while still on the base by holding down the Start/Home button for 20 seconds.
Note: Check the LED around the Start/Home button while on the base. If it is lit up, continue the steps below. If there is no light at all, there is no power left in the Neato or it is not charging (which is not a blank LCD issue).
3. Hard reset the Neato by unplugging one battery or turning off the power switch for 3-5 minutes.
4. When the Neato powers back on, check the LCD screen to see if it is working correctly. If the screen comes back up, follow the steps to calibrate the battery by fully charging and running three complete charge and discharge cycles.
If the issue persists, please click on the blue Chat icon for assistance or visit our Customer Care contact page for more options.