Original topic:

QN900B - 4K 100hz or higher gaming - Input Signal Plus problems.

(Topic created: 07-18-2022 08:59 AM)
QLED and The Frame TVs

Hi team…recently purchased the flagship tv. Now running into similar problems as multiple threads from older models trying to connect a pc to any hdmi port (well all but the earc port). 


I’ve had the tv recognise and actually get into game mode a handful of times and have seen things running at 100hz and 120hz in 4K and 60hz in 8K. HDR even is not selectable at this time.

Unfortunately 99% of the time as I select game mode to unlock the higher frame rates, the tv rejects the handshake and shows a blank screen telling me the hdmi port is unplugged. I turn off game mode and then turn off input signal plus and the tv returns to 4K but limited to 60hz. 

There are multiple threads here suggesting this goes back to the T range and the R and now  the flagship model with the one connect box which I paid a mint for is suffering the same fate. 

- 75 inch tv.

- windows 10 all updated. 

- graphics card updated and also reset from scratch 2 times.

- Used all hdmi ports on my 3080 Aorus master.

- Used all hdmi ports on the tv bar the e-arc port.

- I’ve reset the tv.

- I’ve tried 3 x hdmi cables new and old and all are 2.1 certified and range form 1.5 metres to 2.5 metres. 

Looking for tips and advice and ultimately a fix. Not keen to have a flagship tv that can’t do its job. 



1 Reply
Community Manager
Community Manager
QLED and The Frame TVs

I can definitely understand how frustrating this may be. I believe this particular issue may require service. In order to be certain, I would like to gather additional information, and look at this from a case by case basis. Please provide the full model code and serial number of the device as well as your best contact phone number, name, and email


Send a message on Facebook 
Send Message on Twitter
Send Message to Moderator

If your unit is out of warranty and you would like to receive quotes on service/labor from an Authorized Service Center near you, please visit: