Apple TV 4 Turns TV ON with CEC but won't turn TV off

I have found that though my Sharp 1080p non smart does have CEC, it is limited to only turning on and not turning off when I turn on the Apple tv and it works great. The other side to that is when I turn my tv off with the tv remote, my CEC is suppose to turn off the Apple TV and the Directv box connected to it as well but doesn't, which might be solved with software updates. Just my experience with my personal tv.

I too have a 70 inch Vizio P series tv (P702ui-B3) and my Apple Tv can turn the tv on and adjust the volume however it cannot turn the tv off. Also the auto off feature doesn't really seem to be working for me either as it can take 30 minutes or more for it to show "No Signal" and even then if often doesn't turn off in ten minutes.

I also have a PS4 and Onkyo TX-NR636 and practically the same issue where those devices can turn the tv on but they cannot turn the tv OFF.

Vizio has publicly stated they fully support all CEC features: https://twitter.com/VIZIOsupport/status/662645032898416640 however their customer service/tech support has practically said everything but the fact they support it.

From researching it appears some Vizio Models have no issues. Almost everyone with a P series however ONLY has an issue with powering off via CEC. I've also emailed tech support and they suggested to call which as stated truly got me no where for the time being. If you do call the reps in South Dakota seem to be more knowledgable versus some other places (they state their location when they answer the call).

I've also personally contacted them on Twitter (the above link was not me) and I received some DM's and they stated it should work and would look into it however I'm not holding my breath.

I've also submitted feedback to apple. Even though this isn't an Apple issue from my testing I've seen situations where Apple has proactively contacted other companies to ensure devices work well. One example is I know from an Asus rep who releases beta firmware onto one of their forums has acknowledged they've worked with Apple regarding iOS WiFi issues in the last year.

So my two cents is to reach out to both companies both written and via phone because when I called in not a single person with Vizio had heard of this nor even knew it was possible to turn a tv off via CEC.

I read on Twitter that the Vizio E series does in fact work as expected. There's a new update coming out for Vizio Tv's which is 1.3.15-UHD but there's no formal release notes and they send out updates in batches in case there's something that messes up a lot of TV's so it could be a week or two before we even receive that update and zero guarantees that it will address this issue.

I have a Vizio 37" LED (Model # M370NV). The TV will turn off in response to Apple TV 4 CEC commands, but will not turn itself on. Calls to Vizio tech support did not help anything - "well, looks like that isn't working right", basically. They are not going to supply a firmware update to this TV, so I'm out of luck. I will NOT be buying Vizio again, that I assure you.

My other two Apple TV 4s, both connected to Samsung TVs, work just fine.

Weird, I recently got the new Apple TV and it would turn ON and OFF my TV. Then it just stopped working, after a couple days. Now it just turns OFF my TV and not ON anymore.

I use the same HDMI cable for my PS4 so I'd swap them back and forth. It worked when I did that. I called Apple and they had no fix, and to be honest I didn't feel like he cared.

Just wanted to add more to the list of people with the problem.

I'm using a Panasonic VT25 series plasma FYI.

I Was having this problem with my 32 E series (vizio). I went to Menu -> system -> CEC -> Enable . It was set to ARC Only. Then Below that there is a Device Discovery option that registers CEC devices attached via HDMI. I clicked that and It recognized the ATV. works as expected now. Mine is a 2015 model.

Same problem here with a Sharp Aquos. It worked fine until I upgraded tvOS to 9.1. Then it would all work except for turning the TV off. I reset and restarted both the TV and the ATV, turned CEC off and on, and even had the TV find and identify the ATV, but still no luck turning it off.

I am having this same problem with my Vizio tv. When I have it on ARC only the volume works but it doesn't turn the tv on or off, but when I have CEC on enable it turns the tv on but volume control won't work and it won't turn the tv off.

i have same problem. The New Apple TV has messed up my hdmi-cec. When i pulled apple tv of the box it was controlling the tv power and volume. Now even after being powered on/off several times, it won't control tv or volume (even though its set to On to control it) and I now can't control the TV's volume from its own volume control more, i have to use the AV system's volume. Even if it turn hdmi control OFF, my tv remote won't control AV system anymore. Using old apple tv I was able to control tv volume from tv's remote, now even that doesn't work. Also I've had difficulty flipping from Xbox to Apple tv, (never had that issue before) , sometimes shows black screen instead apple tv, sometimes it shows several green screens then apple comes up. Also i have switched backgrounds from Aerial to Photostream -- several times, it wont' save it. it says its there, but then goes back to Aerial every time.

For reference i have a Sony Bravia.

I had the same problem until yesterday--suddenly the apple remote will now also control the volume on my samsung soundbar without any issue. I would recommend trying again to see if whatever update was pushed out fixes the other issues as well.

Got the same problem. Got a new ATV4 a couple of weeks ago. All worked fine for about a week. Then, all of a sudden ATV4 stopped turning the tv on. and stopped changing to correct source if the tv is alreasy on. Really annoying as I have to change the source on tv to blueray reciever and then change the source on the reciever to HDMI 2.

ATV4 and PS4 connected to Samsung B-ray reciever. Reciever is connected to Samsung tv.

Everything else works perfect. 😟

CEC is a tricky critter. All I can suggest is to check the settings all along the HDMI chain to be sure CEC is enabled.

It sounds like you may have received an ATV software update. I find that power cycling the ATV after an update is required to put it back to "normal", so you should try that.

Why not connect ATV directly to an HDMI input on the TV? Is your bluray also a sound system?

Yes bluray is also a home theatre with 5.1 sound. And yes, the problem started after an ATV software update. 😝

What do you mean by "power cycling" th ATV? I tryed resarting it from settings and disconnecting it from power. Didn't help.

I meant disconnecting it from power for at least 30 seconds.

As I said, all you can do is check the settings on each device. Maybe turn CEC off and back on.

Are you using "high speed' HDMI cables for all connections? That ensures they support the current standard.