No image with hdmi

Hello, I tried to play a video on my projector. Using the hdmi output with my preamp. I have the sound but not the image. The video appears nicely on Rose’s screen.
Can you help me ?

Hello,

Is the video moving on the ROSE device? If so, please touch the ‘TV’ button on the top right of the screen.

If there’s no image even after you did it, please try other HDMI resolutions.

(RS150 → Setting → Display → HDMI resolution)

Thank you, no more problems now