Anyone got any experience of this:
Got my PC with a new NVidia RTX 3080ti connected to my QN800A (QE75QN800ATXXU) but I can't get it run without the screen going black periodically (anything from every few seconds to every 30 seconds) for a 3-15 seconds before coming back on. I initially noted this issue when trying to run 4K 120Hz, HDR but I've now noticed that it also happens @4K 60Hz with HDR and VRR turned off.
Tried in and out of Game Mode but it continues to happen.
I did notice that the One box was getting hotter and the picture going off and on was getting worse. So I left it overnight then tried again in the morning. It worked perfectly well @ 4K 120Hz HDR and VRR for about 3 minutes then started happening again and getting more frequent as the box got hotter.
What I've tried:
- Running on LG 48CX, it ran 4K 120Hz, HDR, VRR for hours with no issues. So guess the PC is not the issue.
- Swapping out the GPU for a RTX 2080ti, this worked fine with the Samsung but as its only HDMI 2.0 I could only manage 4K @ 60Hz HDR and VRR, this leads me to believe its something to do with the HDMI 2.1 on the One Box.
- Tried three different 8K rated cables, two of them brand new. No joy.
- Update all drivers on PC
- Software update on TV
Anyone got any ideas?
I have the same issue with mine only with my Xbox Series X though. My PS5 and Apple TV do not lose signal or drop out. I have changed cables and still will go black for extended periods of time. I have the model QN75QN800AFXZA. I have had times where the signal will not come back at all unless I unplug the hdmi cable and plug it back in. Very frustrating experience with this tv so far.
Thanks for the responses.
There has a been a bit of development with my issue. Despite trying with three different 8K rated HDMI cables I decided to order some more to try. I got the best ones I could find (IBRA 2.1 Orange) and bought a 3m and 1.5m. Low and behold all seems to be working fine now (with both cables). I've been testing for about 2 hrs and no issues at all. Previously I'd have seen issues after a few mins.
I will keep testing and let know if it re-occurs but I think I'm good.
Very weird though as the other cables worked with my other TV under exactly the same conditions (resolution, hz, HDR).
Oh I also bought a laptop cooler to sit under my Samsung box for good measure.
That all sounds really painful! I hope it gets sorted soon.
I did find that the problem persisted very occasionally even with the new cable so I bought one that was only 1.5 meters long and it has not been back since. Very annoying that only the Samsung TV requires this, but as long as the issue is fixed I can live with it.
I went with a Tecknet one from Amazon. It was only £24. The fans a a little noisy though so might change them (or it).
Best of luck with your issues.
Hi James, I have the 85inch QN800a since April and am having the same intermittent drop outs from any HDMI input. Have you managed to find a solution as it’s driving me crazy!