This is puzzling. I have an LG Nano85 that uses ARC to feed the TV audio to a Yamaha RX-V583 AVR. I have an Ultra 4800 and an Nvidia Shield directly connected to the Yamaha, and nothing is directly connected to the TV itself. Everything connects directly to the AVR, including an old DVD changer and a Windows 10 HTPC. The only time I've seen the TV audio change to TV Speaker is if the AVR is powered off.
My guess (and that's all it is) is there was a firmware update to the TV that doesn't play nice with the Roku OS. Since your TV is a commercial grade TV, it's not designed to use an AVR or use external devices. Since it's happening with all four of your Roku players, that would indicate there's no specific issue with the Roku itself (not a hardware issue). While your Yamaha model is discontinued (as both of mine are), it should still be working correctly with the Roku.
You could try disabling the Roku's One-Touch Play, which disables CEC for the Roku. If it still happens with that turned off, then there's some sort of incompatibility with your particular model of TV. Personally, I wouldn't want to use a TV that's designed for commercial or hotel use, as yours is. They often have some unique settings that might have issues with other connected devices, as they are designed to be used as a standalone display.
The Firmware of the TV causing the issue is a good thought. I thought the same thing. But that TV doesnt auto update via the internet. In fact the only way to update the firmware is via USB, manually (which I did, after this problem started, thinking it may fix the issue).
I am wondering if an update on the Roku box caused the issue. There isnt a way to roll back the updates on the Roku boxes, is there?
Justin-Gamble wrote:
I am wondering if an update on the Roku box caused the issue. There isn't a way to roll back the updates on the Roku boxes, is there?
There's a hidden menu that will on occasion allow rolling back one version of the firmware, but it's not reliable and usually the Roku merely updates itself again and the rollback is no longer available.
Interesting. How can i get to this menu? It would be worth checking, just to isolate the problem. Last night I moved the Roku Ultra from the Yahama Receiver and plugged it directly to input 3 on the LGTV, and the problem continued.
I then removed the Roku Ultra, and replaced it with an old Roku Express (doesnt have audio control on the remote). I didnt have issues, until I updated the firmware on the Express. Then it did the same thing.
I am 95% sure the issue started when Roku updated their firmware. But rolling it back to test would help solidify that. I think I am going to need to talk to Support on this one one, if that is the case though.
