Playback Issues - Audio/Video & Power

Help with audio & video playback issues, TV display type recognition & compatibility, HDCP messages, troubleshooting playback errors, advertisements, and resolving power issues.
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Level 7

Black Screen Flashes With Ultra And Samsung TV

Hello, 

My Roku Ultra will flash a black screen intermittently, ~ once an hour when I stream at 1080P. If I lower the resolution to 720P the flashing stops.

When I use my Game Station or Samsung DVD player at 1080P the display is fine. Only with the Roku Ultra does my TV flash a black screen.
 
The last 4 months I ‘ve been using my Roku Ultra at 720P to avoid the black screen flashing. My TV has been effectively down graded to a 720P TV. 

CAN THIS BE FIXED?

TV Model Samsung UN46FH6030

Streaming service Spectrum
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9 Replies
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Roku Employee
Roku Employee

Re: Black Screen Flashes With Ultra And Samsung TV

Hi,

Thanks for letting us know about the issue that you are experiencing.

The issue may be related to HDCP. For more information regarding HDCP please visit our support page here: https://support.roku.com/article/208755468-what-should-i-do-if-i-see-a-hdcp-error-detected-message-o...

We recommend that you try plugging your device into another HDMI port as well as trying a different HDMI cable to see if that resolves your issue.

Also, do you see this behavior when your settings in Settings>Display type are set to Auto?

Please keep us posted.

Thanks,
Danny
Danny R.
Roku Forum Moderator
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Level 7

Re: Black Screen Flashes With Ultra And Samsung TV

Switching the display to “Auto” in “Settings” does not stop the intermittent flashing.

Tried switching HDMI ports, bought a new HDMI cable, nothing works. Still getting the flashing about once an hour or so.

Anyone have any more ideas?
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Level 7

Re: Black Screen Flashes With Ultra And Samsung TV

Update: I’ve given up on my 6 year old Samsung TV. 

Technology, especially HDMI and HDCP technology has moved on while my Samsung TV has become obsolete. It now serves bedroom duty at 720p.

The new replacement Vizio works without issue with the Roku Ultra. The 2160p picture is magnificent.

Bottom Line, it was the 6 year old Samsung that seems to be the problem, likely the obsolete HDMI HDCP technology the cause.

Over and out.
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Level 7

Roku Ultra Flashing Black Screen (FIXED)

I had the same problem on my Vizio 4K Smart TV and have found a solution . For some reason my backlight had to be below 60 . I don't understand it but setting it below 60 worked . Everyone who has this problem should try this . You never know .

[post merged with already existing thread]

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Level 7

Re: Black Screen Flashes With Ultra And Samsung TV

I am having the same issue with my Ultra and a 2 year old Samsung LED TV. Not ready to give up on it.

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Level 7

Re: Black Screen Flashes With Ultra And Samsung TV

I’m having the same problem on all my Samsung TVs with my ultra 

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Level 7

Re: Black Screen Flashes With Ultra And Samsung TV

I have the same issue with my Samsung TV....may have to return the Roku, cant watch TV like this 

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Level 19

Re: Black Screen Flashes With Ultra And Samsung TV

Thanks for the note. This type of behavior may occur if either certain settings on your TV aren't configured correctly, or if you've enabled 'auto-adjust refresh rate' on your Roku device.

- Try going to Settings>System>Advanced system settings>Advanced display settings and siable 'auto-adjust display refresh rate'. This can eliminate black flashing behavior that occurs when refresh rates change. See more here: https://support.roku.com/article/115012823268-how-do-i-change-the-display-refresh-rate-to-match-the-...

- You will also want to review your TV's display settings related to HDR and/or 4K, if applicable. Try enabling/disabling HDR settings. 

- If you are connecting to a 4K TV, you'll need to make sure you are using an HDCP 2.2 certified high speed HDMI cable for proper functionality. See more here: https://support.roku.com/article/230317588-why-is-hdcp-2-2-important-to-playing-4k-ultra-hd-or-hdr-c...

We'd also recommend reaching out to your TV manufacturer for additional help or support in reviewing or changing your TV's settings accordingly. 

 

Thanks,

Tanner

Tanner D.
Roku Community Manager
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Level 7

Re: Black Screen Flashes With Ultra And Samsung TV

I have had the same issue from the day I baught the Roku. The only thing that worked was downgrading to 720. New HDMI cords, and all the setting recommendations did nothing to get rid of the black screens. I found this also happens on both my ultra and streaming stick. To make matters worse is the TV never detects a signal unless I cycle power each time I watch, unless I use 720.

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