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

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257 replies

Oct 16, 2018 8:40 AM in response to roland6465

Same projector with same problem as Roland above. I had the blanking problem solved until ios12 with an AudioQuest cable.

Oct 16, 2018 9:14 AM in response to Sam Edwards

I opened a ticket with Apple today, and gave them this and the AVS thread to reference. Unfortunately, my ATV wouldn’t reset and update while on the phone, so I’ve sent it to Apple to diagnose.

Dec 21, 2018 10:24 PM in response to Bruce Anderson2

p.s., My HDMI cables are 4K (SIIG?) between the AppleTV, Onkyo, and Samsung. I thought they were pretty high end cables. AppleTV to Onkyo is a 2M, Onkyo to Samsung is longer (5M ?).

robnbill

Level 1

45 points

Jan 8, 2019 9:27 AM in response to JBH_

Thanks. Good info to be aware of. Whick beta are you on?

Jth1180

Level 1

4 points

Jan 14, 2019 1:08 PM in response to jologames

I gave Sony 900f and apple 4k and I have the same problem. Optical works fine. problems with HDMI.

JBH_

Level 1

4 points

Jan 17, 2019 4:06 PM in response to gilby86

Glad my suggestion is helping others here. What a silly oversight on their part as it appears as though the problem is pretty widespread.

robnbill

Level 1

45 points

Feb 11, 2019 11:21 AM in response to gilby86

Thanks - please keep us updated.

Curious - the two signal drops -- were they at the same spot in the material - that is - could you replicate it?

gilby86

Level 1

9 points

Feb 11, 2019 1:43 PM in response to robnbill

My TV went black and then the signal came back, because of the signal loss to the hdmi not once, but twice.

AdiBen

Level 1

6 points

Mar 21, 2019 7:22 PM in response to MrDigby

What OS have you been using in all these four months ?

AdiBen

Level 1

6 points

Mar 22, 2019 2:11 PM in response to gilby86

Hi, are you still on that beta ? Does it still work with any issues so far ? Thanks

gilby86

Level 1

9 points

Mar 23, 2019 7:01 AM in response to AdiBen

Yes I am running the current beta (16L5226a) with no problems.

gilby86

Level 1

9 points

Mar 27, 2019 11:16 AM in response to AdiBen

What kind of TV do you have? I am using a standard HDMI cable that the cable companies give you.

Vancouver22

Level 8

37,622 points

Mar 27, 2019 12:02 PM in response to gilby86

I’m using the cable company’s HDMI Cables as well.

One of my Apple tvs on a smaller bedroom TV runs through a switch box to switch inputs

gilby86

Level 1

9 points

Apr 4, 2019 10:53 AM in response to AdiBen

Typical Apple...lol. I know more about there products then they do.

gilby86

Level 1

9 points

Apr 6, 2019 7:33 AM in response to AdiBen

Just turned on a soccer game on the Sling App and it happened to me. I'm done. I am selling it and going to get something else. I am currently running 12.2 the official release.

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Apple TV 4K Random HDMI Signal Loss