Marantz cinema 50 troubleshooting

[Nutmax]

Hello,

I could use some help troubleshooting my Cinema 50. I have it hooked up to an LG C2 and it's been working great for about 2 weeks until this evening.

It can't get video output anymore. I didn't change anything between last night and tonight. I can't even get to the Marantz settings page anymore. It only shows Marantz as a media server?

My apple TV is connected to the "Media Player" input in the back of the receiver. It's working because I can hear sound coming from it when I shuffle the remote. [example]

I've tried unplugging it for 5 minutes and then plugging in the power and turning it back on with no luck.

When it first powers on, it will load a black screen with "dolby vision" at the top right which I assume is coming from the apple tv. It then switches back to my TV and shows "no signal" like this

I'd appreciate any help. Thank you so much

 

[rsharp]

I'm beginning to wonder if it's the AppleTV causing these issues with HDMI. Once I moved from an Apple TV HD to an Apple TV 4K (though only outputting 1080p/60), problems have occurred.

The exact symptoms were that my receiver (Pioneer SC-91), would lose the following functionality:

• Setup menu would not be output at all.
• iOS remote app and Mac using a browser to directly connect to the receiver's IP address failed to connect at all. I'm using wired Ethernet.
• Accessing setting functions directly on the receiver displayed "unavailable" on the receiver's display.

In addition, my display (Pioneer Kuro PRO-141FD) would rapidly cycle between three types of output (colored noise, a blue-tinted screen of the Apple TV's output, and no picture at all).

I had to unplug the receiver and leave off for a while (30 minutes, though maybe that could be a lesser time). Then all things worked again.

However, the problem came up again. Then, I moved the Apple TV 4K to use the receiver's HDMI 1 through 3 inputs (which support HDCP 2.2 and higher bandwidth). Previously, it was connected to inupt 6. So far, the problem has not returned.

I have no idea if the Cinema 50 has equal specs on all its HDMI inputs. But you may want to try using a different input to see if that makes a difference.

I've filed a bug with Apple regarding this issue just in case it truly is their problem.