Apple TV 4K Random HDMI Signal Loss

Anyone have a similar issue they have solved? I originally had the issue of flicker that was solved on my LG C7 by changing motion to User set at 0, but an issue I am having is the signal from my ATV to the TV drops out randomly. Usually I can make it through a show, but a movie it will drop at least once. Audio seams to reset here and there too, but it comes right back with the little Dolby Vision logo on the TV flashing. To get the picture back I have to put the ATV to sleep and then turn it back on. If it wasn’t for the free 4K iTunes upgrades I think I would just be done with this thing. I have tried brand new cables too by the way.

Posted on Nov 18, 2017 7:27 AM

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Posted on Dec 24, 2017 9:15 PM

**SOLUTION FOUND**


Hopefully this will work for everyone. I bought this HDMI 2.1 cable off Amazon ( Amazon.com: ECHOGEAR 4 ft Braided HDMI 2.1 Cable - 4k Compatible With Gold Plated Connections For the Best Picture - Sup… )

ECHOGEAR 4 ft Braided HDMI 2.1 Cable - 4k Compatible With Gold Plated Connections For the Best Picture - Supports HD, 4k, and Ethernet Signals With 120fps Refresh & 48gbps Bandwidth.

It has worked with no issues and I'm no longer experience any signal loss. Doing my research I found that HDMI 2.0b can't handle 4k TV's with 120hz native refresh along with Dolby Vision; too much bandwidth. Any HDMI 2.1 cable should work but if you are buying off Amazon, PLEASE read the reviews and descriptions first. There are some companies claiming their cable is HDMI 2.1 compatible and it isn't. The Echogear has worked for me with no problems for over a week. I'm running an LG 65" 8500 series TV with Dolby Vision.

http://www.techradar.com/news/new-faster-hdmi-21-cables-are-on-the-way-heres-wha t-you-need-to-know

257 replies

Dec 31, 2017 11:39 AM in response to fmetz374

I updated my LG OLED B7 and also am running the most recent TVOS software but am still having the same issue with the random single loss, where the ATV4k is on but the single drops and the screen goes black. Seems to happen within 5-10 minutes after Turing on the ATV4K. I am using a HDMI 2.0 cable 18gbs, the second one im trying with the same issue. Not sure if upgrading to a 2.1 cable or "Ultra High Speed HDMI" cable thats rated for 48gbs. Would anyone else recommend this? I am using 4k at 60hrz dolby vision. Maybe the 2.0 hdmi cable cant handle the bandwidth?

Jan 6, 2018 8:27 AM in response to bazapple

Its an Apple TV4K issue. I didn't have any issues with the " lost signal" problem with my last gen ATV so it certainly seems to be an ATV4K issue. I started experiencing this "lost signal" problem the DAY I got it and have been frustrated baby it ever since. I too have called Apple support about it and tehy jsut say " uhh, derrrr, go buy our 30$ HDMI cable, that'll "probably " work? Apple better get a fix for this!

Jan 15, 2018 4:25 PM in response to kpuscas

Sorry your having problems, what are you using for video settings on your ATV 4K? If your TV is non 4K than you cant use dolby vision, so are you using HDR or something else? Strange your having issues, it is concerning since everyone here mainly thinks that the problem lies within the 4K dolby vision and the old HDMI cables not being able to handle the bandwidths of that.


I switched to the EchoGear Cable and have had no issues since. Been about a week or so. Try that cable, but if your not pushpin 4K to your TV, I am not sure what could be the issue for you.

Feb 4, 2018 10:11 AM in response to jasonmet77

So I tried the Echogear and didn't help. What does seem to help a bit is if I change the HDMI Output setting (mine is non-4k). It doesn't matter what I switch it to, just that I switch it. This will usually help for a while but eventually it will go back to dropping the signal to the TV. Gonna try putting a hdmi splitter between the ATV and the TV to see if that helps at all. I'm going on the theory that since the ATV doesn't have the problem when going through a A/V receiver the splitter will have a similar effect. I agree with everyone else, this is really getting frustrating. I'm getting tired of these little patch solutions for something that "should just work".

Feb 15, 2018 2:00 PM in response to lowtje

The more I read everyones posts, the more I feel like this has to be a ATV4K issue and not our television sets, the same issue its happening across several different brands, from LG to Sony and Samsung. And apple has yet to acknowledge it. Even when calling and talking to them about the issue they just say but their **** expensive 35$ belkin cable. This is really getting frustrating.

Apr 1, 2018 6:05 AM in response to jasonmet77

I have a similar issue. After several days of normal use, Apple TV 4K loses audio over HDMI. I am connecting Apple TV 4K to my Samsung TV via HDMI 2.0 cable. The TV is Samsung UN40KU7000. Sometimes, and I emphasize "sometimes", the audio comes back on when I connect the TV to another HDMI port. I tried resetting both Apple TV and restoring TV to factory firmware. Apple TV audio will work for a week and then the symptoms re-appear. I am an Apple fan but really hate this device. The new remote touch pad is a pain as well. I don't have these problems with my Roku 4k or old Apple TV 3rd generation. So the only constant is my Apple TV 4K 64GB.


Apple please provide a formal answer to this issue!

Apr 3, 2018 3:18 PM in response to g.bacod

I definitely appreciate everyones experiences, but we are starting to delve into the ridicules here maybe....so now we cant plug anything else into any of the other HDMI ports on our sets, or not in the ARC port? Look, do whatever works for everyone but I mean, this is getting stupid, Apple needs to recognize this is an issue with the ATV4K itself and not our TV's or the HDMI ports. I've had several conversations with Apple support about this and they seem dumbfounded about the issue, they just say change the cable to a next generation HDMI 2.0 cable ( which I'm using). I've tried not using a non-ARC port and still get the drops. I have a 2017 LG OLED that is capable of Dolby Vision so it would seem like the ATV4K would be a perfect fit. I'm just not convinced this is a problem with our sets. I can stream 4K video with the Amazon Fire with no issues as well as other devices. The ATV4K is the only one that drops the single.


I have only had improvements with the drop outs but there has been nothing that actually fixes the issue ( for me at least). The EchoGear cable greatly improved the issue but it did not solve it. Or if you want to spring for the Belkin that Apple is shilling for double the price go for it. But you'll still get the drop outs.... Eventually.

Apr 28, 2018 10:19 AM in response to jasonmet77

Hello all,


I don't have a solution, but I believe that I'm into something that causes the issue: the music.


- When I listen to music in Apple Music, I have the signal loss pretty quickly. It is super annoying.


- When I watch Netflix, I don't get the signal loss. I didn't get it for ages. However, in the episode 18, season 2 of Riverdale, they had 2 musical dance and guess what? I got the signal loss both times in each of the musical dance.


Coincidence? I think not. My setup is the Amazon Basic HDMI cable, with the Boss Soundbar and the LG C7.

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Apple TV 4K Random HDMI Signal Loss

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