If your Aranet4 Screen has gone black or cracked or is stuck, it may need replaced.
E-Ink Display 1.54 Inch With 200×200 Resolution E-Paper Screen
Part Number: GDEH0154D67
These screens do not have the colored adhesive traffic light dots or bars.
(Important note. Any repair or tinkering with the sensor, e.g. even simply removing the set screws will void the Aranet4 warranty. It might be worth checking in with Aranet to see what the cost of them replacing the screen for you is so as to not void the warranty. The Aranet4 comes with a 30 month limited warranty against manufacturer’s defects, this does not include drops, spills, water damage etc.)