I have Q9 series (QN75Q9FNAFXZA) with latest firmware 1325.2. After years, I am first time trying to connect some external OTT boxes. However, I received "No HDMI Signal".
I tried everything multiple times - Power recycling, Resetting the TV, using 4-5 HDMI 'supported' cables, and multiple devices. Nothing worked.
I changed the external device resolution output to different resolution. It finally worked with 576i !!! It didn't worked with 1080p/1080i/2160 at different Hz and gave No HDMI signal.
It seems like the supported resolutions are not working with the TV and TV is giving No HDMI signal issue.
I am very disappointed that I cannot connect any device correctly. Any solutions?