TV and AVR keep turning off (1 Viewer)

[KatherineO]

I have had a modest home theater set up (B&W side speakers, central speaker, subwoofer, Denon AVR with a 55' Panasonic Viera plasma TV) which was initiated in 2014. I thought it was time to upgrade to 4K and chaos ensued. I'm sorry I started the whole process but what's done is done and I'm trying to figure out how to make the new configuration work. I now have 55' LG OLED and a new Denon 4K receiver. But the TV and AVR keep spontaneously shutting themselves off at the same time. Best Buy sent a Geek Squad person to try to figure out what was making it happen but he couldn't find the problem. The only element that hasn't been replaced is the Monster Power Home Theatre Reference Powercenter HTS 2600. Mr Geek Squad changed the places the devices are plugged into on the Monster but that didn't solve it. And Monster Power doesn't make a newer version of the power conditioner/surge protector. Any advice would be very appreciated.

 

[John Dirk]

Hi, KatherineO

This sounds like it might have something to do with HDMI-CEC. If I'm correct, you can just find the relevant setting in either your TV or AVR and disable it. Names can differ between manufacturers but it's generally found under HDMI controls or similar.

 

[KatherineO]

Thanks. Trying that to see if it works.

 

[JohnRice]

I agree with @John Dirk . I would turn off all CEC on all devices.

 

[KatherineO]

Since I followed your advice, everything seems to be working now. Thanks so very much!

 

[KatherineO]

I'm still having problems and the only piece of equipment that wasn't replaced is the Monster Power Home Theatre Reference Powercenter HTS 2600, so I'm thinking of replacing that with a Furman unit, either the PST-2+6 Power Station Home Theater Power Conditioner or the Furman PST 8. Any advice on which to choose?

 

[JohnRice]

I’d try connecting everything to an outlet and eliminate the power center, before spending $ assuming the power center is the problem.

 

[KatherineO]

My project for tomorrow.

 

[KatherineO]

Update: I've plugged the cable box directly into a wall outlet and things are better but not flawless. I use the Denon remote to switch to the Roku which is on the Media Player input, but when I switch back to CBL/SAT the Xfinity remote takes its sweet time -- seems frozen and then engages. Could it be the new Denon receiver?

 

[KatherineO]

I think the problem is solved. Plugging the cable box into the wall has worked. Thanks to everyone for help and support.