Every 3rd or 4th time I power up my Roku, the start-up screen appears then everything goes blank and eventually I get a No Signal message. I've seen mention of this issue on several other posts but no resolution. Here's my setup and what I've tried:SetupLG OLED 65" B8Roku Streaming Stick+, powered by TVWhat I've triedUpdated firmware/software of RokuUnplugged, plugged in RokuSwitched to a different input/source and backSwitched Roku to different HDMI portsSwitched power source from TV to outletIssue happens less frequently when powered by outlet but likely because the Roku stay onHard reset RokuManually set resolution through RokuVerified other devices work on HDMI portsIs this a known bug? Has anyone else resolved this issue?

I have the same issue with my Roku Ultra with my 65" LG OLED C8.I have disabled the Ultra HD deep color option and it still loses video signal with tv. I also bought a brand new one from Walmart this week and tried it and got the same results using a different HDMI cable.It's definitely something wrong with the Roku.How can this be fixed?

Purchased a brand new Roku stick+. Had this very issue upon setting up and could never get a signal. Any mine is plugged into a wall outlet, so I know that’s not the problem. I’ve been through all your trouble shooting videos. No 800 number to call for help? You have a compatibility problem with LG smart TVs that you aren’t addressing.

Im another frustrated LG 4k TV owner with same Roku fail. Where is Roku tech support? Do they even care this is a valid problem? Also I'm a professional AV systems installer, well versed in troubleshooting. I can only use Roku when connected thru my AV receiver, but I loose 4k capabilities. My biggest frustration with Roku is there is NO chat or email capabilities on the supposed tech side of the website. Horrible support!

Same problem, No support?? I will never buy another roku if this isn't resolved. Roku is pitiful. Too many options to put up w your garbage product.

I am having the exact same issue with a Roku Ultra and LG tv. It will work for extended periods of time and then if the Roku gets unplugged we can not get it to reconnect. We have tried different hdmi cables in different ports, changing the hdmi ultra color as recommended and changing what Power outlet the ROKU is plugged into. We also attempted to update our tv. This is incredibly frustrating and would be great if there was an actual solution provided by ROKU.

No Signal Issue on LG OLED

32 Replies

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SparkyLA
Newbie
6 years ago
RokuTannerD I am having the same issue. I just purchased a Roku Ultra and a LG 55 inch LED Nano 9 Series TV and the screen will go dark and then I will get a no signal message on the TV.
This happens a few minutes after turning on the TV and then usually another time during I have disabled HDMI Ultra HD Deep Color'. I have also tried resetting the devices and changing HDMI ports. I am still having this problem.
This is incredibly frustrating. There are several posts describing this issue. Is there not a fix for this?
PmiB
Reel Rookie
6 years ago
I am having the exact same issue. Little help here Roku? The strange thing is this seems to come and go at times after I've reset everything from the Roku to apps, etc. The latest issue with this is with Apple Plus specifically, but I get the "no signal" from time to time when anything seems to require the combination of the LG OLED "Deep Color" setting to Roku 4KHDR 60fps alignment. Roku?
RokuTannerD
Retired Moderator
6 years ago
mbanderson Thanks for the note here. We would recommend always using the included wall power adapter and cable, as USB ports may not provide enough power for your device and may cause unintended behaviors.

You might also try enabling/disabling 'HDMI Ultra HD Deep Color' on your TV, if supported.

Thanks,

Tanner
- vmwm5
  Newbie
  6 years ago
  I have the same issue with my Roku Ultra with my 65" LG OLED C8.
  I have disabled the Ultra HD deep color option and it still loses video signal with tv. I also bought a brand new one from Walmart this week and tried it and got the same results using a different HDMI cable.
  It's definitely something wrong with the Roku.
  How can this be fixed?
  - JayDub21
    Newbie
    6 years ago
    Same problem, No support?? I will never buy another roku if this isn't resolved. Roku is pitiful. Too many options to put up w your garbage product.
- Nicampbell
  Newbie
  6 years ago
  Purchased a brand new Roku stick+. Had this very issue upon setting up and could never get a signal. Any mine is plugged into a wall outlet, so I know that’s not the problem. I’ve been through all your trouble shooting videos. No 800 number to call for help? You have a compatibility problem with LG smart TVs that you aren’t addressing.
  - Esv82
    Binge Watcher
    6 years ago
    It's not just with LG - I'm having the same issue with my Samsung smart tv. Every time I change inputs from my cable box back to my Roku, I get a black screen saying "no signal" and I have to unplug the wall adapter and plug it back in, and it works again until my tv is off. I've been asking for help for a week now and have not heard anything back.
- PmiB
  Reel Rookie
  6 years ago
  RokuTannerD if you disable the LG TV Deep Color, you are reducing the ability for the Roku device to play back at 4K HDR 60fps right? And if so, certain apps won't play certain content and thus the "no signal"?
  - TLD2
    Newbie
    6 years ago
    I am having the exact same issue with a Roku Ultra and LG tv. It will work for extended periods of time and then if the Roku gets unplugged we can not get it to reconnect. We have tried different hdmi cables in different ports, changing the hdmi ultra color as recommended and changing what Power outlet the ROKU is plugged into. We also attempted to update our tv. This is incredibly frustrating and would be great if there was an actual solution provided by ROKU.