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jasonmet77 Author

Level 1

57 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 10, 2017 3:37 PM

I’m having the same issue as well. I have an LG 65” SJ8500 with Dolby Vision connected to the Apple TV 4K. I’ve tried turning the SIMPLINK (HDMI-CEC) settings off and on on both the Apple TV and LG and still have the same issue. Glad to find other people having this issue because I almost returned my TV thinking it was defective.

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257 replies

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?

happyfox

Level 1

4 points

Feb 9, 2018 3:38 PM in response to jasonmet77

I can confirm that using the Echogear HDMI cable fixed the issue for me too. Bought the cable 2 weeks ago and no problems.

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?

robb77

Level 1

4 points

Mar 1, 2018 10:41 PM in response to AviatorG822

I've been connected via Ethernet since day 1. Definitely has nothing to do with WiFi. My guess it's a fault in the HDMI handshake process between the Apple TV and TV. tvOS software issue I assume.

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.

Mar 27, 2018 9:35 AM in response to jasonmet77

I upgraded to the Belkin cable (48 Gbps, HDMI 2.1 compatible), and no issues so far. Seems HDMI cables aren't as robust as I thought, even when certified for a certain bandwidth.

Apple TV 4K Random HDMI Signal Loss