What should I do if there is no screen appears when connecting the Projector to an external device?
1. Make sure that the external device is connected securely and turned on. Move to Sources to switch to other input sources: go to “Settings” > “Inputs” > “Inputs” > “HDMI”.
2. Remove and re-insert the power adapter from the projector.
2. Remove and re-insert the power adapter from the projector.