Level 1

58 points

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

Top-ranking reply

jess300ztt

Level 1

9 points

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

View in context

257 replies

Jan 6, 2018 7:49 AM in response to bazapple

I had mine replaced. Still the same issues.

bazapple

Level 1

50 points

Jan 7, 2018 6:39 AM in response to kgiame1

My HDMI cable apparently does not support Dolby vision, so my settings have been on 4K HDR 60 - I have also tried the 4K SDR - and have experienced signal loss on both settings...

bazapple

Level 1

50 points

Jan 13, 2018 8:35 AM in response to jess300ztt

I got the Echogear 2.1 HDMI yesterday and things worked really well last night. Today, however, I lost signal yet again usIng the new Echogear cable.

This is really frustrating.

kgiame1

Level 1

4 points

Jan 13, 2018 8:57 AM in response to jess300ztt

What TV brand is the 65' 8500? is that a Samsung? Have you had any single loss since you switched the cable?

kgiame1

Level 1

4 points

Jan 13, 2018 10:20 AM in response to jess300ztt

My HDMI is ARC, so your saying I should plug my Apple TV into the arc port? Don’t I have to connect the APTV to the sound bar first and then connect the sound bar to the TV?

Jan 24, 2018 2:26 PM in response to jasonmet77

Everyone: when you call Apple support, do you tell them that we have a big thread here and the issue keep having victims?

GayleG

Level 1

10 points

Feb 10, 2018 4:15 PM in response to shaun2k

Nope..this exact problem is happening with my brand new 82" Samsung HD HCP TV

Feb 10, 2018 7:15 PM in response to KaiKane505

I think it’s an issue with the LG C7 and HDR/Dolby Vision. I have the issue with my Apple TV and the PS 4 Pro. Incredibly annoying. I hope there’s an LG firmware update soon.

GayleG

Level 1

10 points

Feb 10, 2018 7:17 PM in response to 3leggeddog

Unfortunately that's not the case, this is happening on my new Samsung 82" HD / HDR set with ATV4

Gayle

lowtje

Level 1

4 points

Feb 15, 2018 2:21 PM in response to 3leggeddog

Mine is connected to the Samung One Connect box. Tried other ports as well. Same issue.. Are there Apple support people reading this thread??

happyfox

Level 1

4 points

Feb 15, 2018 3:15 PM in response to kgiame1

I have a LG 65SJ8500 65-Inch 4K TV.

lowtje

Level 1

4 points

Feb 16, 2018 12:34 AM in response to robb77

Let him know that this thread existst ;)

Feb 22, 2018 1:17 PM in response to jasonmet77

Experiencing the same problem, very frustrating.

Mar 1, 2018 8:48 PM in response to robb77

Just going out on a limb here, but does anyone think the issue could be a WiFi signal dropping out or slowing down enough to cause the video content to seize?

Mar 6, 2018 10:41 AM in response to kgiame1

valid points. I'm now dreading the inevitable signal loss! Been trying to figure this out for so long LOL Let me know if you ever come up with a solution! Thanks.

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

Apple TV 4K Random HDMI Signal Loss