Q60B HDMI signal loss after changing hz rate on PC

[PorcoRosso]

Hello all,

I finally figured out how to turn on HDR after a day of messing around. I turned on Signal Plus on the HDMI ports, turned on HDR in Windows and things were running.

Then I changed the hz rate in Nvidia Control Panel from 30hz to 60hz, because I figured, that's what the tv should be capable of. But then the HDMI didn't recognize the PC input anymore. Every time I turn on Signal plus on the available HDMI ports, the connection with my PC is lost.

I tried switching back to 30hz and 50hz in Nvidia, nothing works. I reinstalled the driver with a clean installation, again without results.

Signal Plus is mandatory otherwise I can't turn on HDR and most of my 4K content is useless.

Is there any solution for this? What did I do wrong when I changed refresh rate on my GPU.

TV: QE50Q60B

GPU: Nvidia 1660 GTX

[PorcoRosso · Accepted solution]

It's fixed!

I reverted to factory settings of my TV and then I changed Nvidia settings to 60hz and YCBCR420. It took like 30 seconds but the HDMI connection remained.

The strange thing is though that in Nvidia Control Panel it now says 30hz with RGB color range. But I am certain I applied the 60hz on 420.

I'm not certain if this is a Nvidia bug and on what color range and hz rate I currently have, but I'm not gonna touch anything anymore.