Grandbeing N373, User Manual

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2. Why TV shows no picture with RX connected?

Check that power supplies of all the devices are powered on.

Check that all the cables are qualified and connected properly.

Check that the sink works properly, and that source devices have normal
signals output.

Check that the output resolutions of the source devices are supported by
TX, which supports the following input resolutions.
TX port type Supported input resolutions of TX
HDMI 480i, 480p, 576i, 576p, 720p, 1080i, 1080p
VGA 640x480@60, 800x600@60, 1024x768@60,
1280x720@60, 1280x768@60, 1280x800@60,
1280x1024@60, 1360x768@60, 1400x1050@60,
1440x900@60, 1600x1200@60, 1680x1050@60,
1920x1080@60, 1920x1200@60
CVBS 480i@NTSC

Check that TX has been switched to the right source type connected via
the HDMI, VGA or CVBS ports.

Check that TX and RX are linked based on status of the Link indicators
on RX. For details, see description in Panel. If link exceptions exist, link
TX and RX using the control software on your computer.

Check that your sink is switched to the correct source input mode, such
as switching to HDMI 1 if HDMI 1 interface is connected to the RX via a
HDMI cable.

Check that no compatibility issues exist between RX and sink. If so,
replace the sink with other models.

Check that power supplies of all the devices are powered on.

The switch supports IGMP snooping and this function is enabled.
Note:
For more information, see HDIP Product FAQ .