Razer Ripsaw HD - Passthrough Output No Signal

Hi Team,



I recently purchased a Ripsaw HD from Razer eBay AU.

It detects fine in OBS and I am able to view the video and audio stream from a Nintendo Switch in OBS preview.

There is no passthrough signal from the output HDMI port however, I am using the included Razer HDMI cable for the output but it does not seem to passthrough a video signal.



I've tried different HDMI cables, a different screens, plugging in the included USB cable first, plugging in the HDMI cables first, nothing seems to enable HDMI passthrough output from the Ripsaw HD.



Main PC Specs:

AMD 3950X

RTX 2080 Ti

Windows 10 Pro

Synapse 3 updated. (Does not display as an attached device in Synapse 3)

Latest OBS release 27.1.3

Nvidia display drivers updated.



Also tested on a Razer Blade 14 (whilst charger is connected) in case it was related to the PC above:

AMD 5900HX

RTX 3080

Windows 10

Synpase 3 updated. (Does display as an attached device in Synapse 3)

Latest OBS release 27.1.3

Nvidia display drivers updated.



Screens tested:

TCL X925 65" TV HDMI 2.1 port

LG CX 65" TV HDMI 2.1 port

BenQ XL2420Z Monitor HDMI1.4 port



Screencap of working OBS preview:

https://imgur.com/seX7gbr



Any advice that you could provide is greatly appreciated. Whilst my usecase is to simply play using the preview window so that I may screenshare with friends on Discord, I do want to ensure that the unit is working appropriately, thanks in advance.