My robovac has been working for 2 years. Nothing has changed in the room but it now can’t find the home base even if it’s directly in front of it. Maybe a sensor is dirty?
If I know how it it supposed to find the base I might be able to fix it?
How does eufy robovac find home?
There is a big sensor in the front bumper. Works via infra red.
Make sure this bumper is absolutely clean and not scratched.
If scratched you could polish it by using a polish for plastics.
( I do this from time to time)
@anker208 Mine was doing that not too long ago as well. I just did what @Chiquinho suggested. I cleaned off the front of it as well as the sensor on the docking base. Then I just went ahead and took as much of the vacuum apart as I could to clean out all dirt, dust, hair, and debris. Works great again now.
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I clean “old Willy” always very properly.
But when we did his surgery last summer, there was such a lot of debris inside, really incredible.
The opening is really easy :
But please dont threw the screws in such a unprofessional way around!
Use small bowls to make distinctions of the different screws and write
down were those were located. 
When the fellow is finished the screws are anywhere.
He is really more than a perfect “engineer”! 