QN65QN90DA 65 eARC HDMI Port 3 not recognizing Onkyo Receiver or displaying weird colors

[EZEarache]

I have been struggling to get the eARC HDMI Port 3 on a new QN65QN90DA 65 to connect to the eARC port on a Onkyo TX-NR7100.

I have run diagnostics and it keeps telling me that the HDMI cable is bad. While this is a possibility, I doubt it because one of the first troubleshooting steps I took was to buy a HDMI 2.1 certified cable and it did not correct the issue. 

I ran software updates on the Onkyo receiver today and that did not correct the issue. 

I am able to get the MAIN HDMI receiver port on the receiver to connect to the TV's non eARC ports and display video from the receiver. However, then I get messages about ARC audio not being supported and to change to HDMI port 3. But when I do I can't get any video to synch. 

I tried connecting a DVD player directly to the TV's eARC Port 3 and it displayed the video in neon green and hot pink tones. I tried connecting with both the certified 2.1 cable and an older HDMI cable.  The fact that this port displays so strangely directly from the DVD is making me think there is really something wrong with the eARC Port 3 on the TV itself. 

Before  I buy another certified 2.1 cable does anyone have any potential solutions to resolve this? 

It's really frustrating because I would like to eliminate a Google Chromecast device from my home theater setup, but I can't get the TV's audio to go through the receiver because the eARC port isn't working.

[Samsung_Moderator · Accepted solution]

Hello! Thank you for reaching out! This does seem strange when you connect it directly to the DVD player and are still having issues. The only this I could suggest would be to try a factory reset. After service would be the only option as issues are still occurring when connected directly to the TV. Depending on your warranty, you will have a few options. 

- If your unit was recently purchased, you can check with your retailer on their return/exchange processes.
- If you have an extended warranty you can reach out to them to have service set up. 
- If you're within the one year warranty, you can Private message me or one of our moderators or you can call in directly at 1-800- 726-7864 with your full model and serial number to have service setup
- If you're OUT of warranty, you can use this link below to find a service center in your area. 

https://www.samsung.com/us/support/service/locations/