Intermittent Black screen flashing

[BMorina]

My TV keeps flashing a black screen intermittently when watching TV via Sky stream.  This is not happening watching TV outside of Sky stream.  Tried different hdmi ports and cables and this is not changing the behaviour.  I saw several posts raising the same issue, so it seems this is not uncommon.  Appreciate any advise on the matter.

[GD1]

@BMorina  To rule out any wifi speed issues open the  Netflix app on the stream puck, go to Get Help, run connection test, what speed is being reported?

[WelshGeezer]

I encountered this issue with a Hisense TV. I had to switch the HDMI Format setting to Standard rather than Advanced. However, I suspect HDMI port 1 was failing because it worked with both settings on HDMI ports 2 and 3.

[BMorina]

I tried with both wireless and Ethernet connections. Both connection show excellent connectivity. Issue is persistent with both connections. 

[Angel_Aka]

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@BMorina wrote:

I tried with both wireless and Ethernet connections. Both connection show excellent connectivity. Issue is persistent with both connections. 

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What is "excellent connectivity" exactly? What speed did the Netflix network check report as being received?

Have you rebooted both the puck and your router?

[BMorina]

@Angel_Aka With wireless connection I get 251Mbps download & 34.7 upload. With ethernet cable i get 356Mbps download & 46.1 upload

[Angel_Aka]

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@BMorina wrote:

@Angel_Aka With wireless connection I get 251Mbps download & 34.7 upload. With ethernet cable i get 356Mbps download & 46.1 upload

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You won't get 356Mbps on ethernet because the ethernet port on Stream pucks is capped at 100Mbps.

Did you run the network check from the Netflix app on the puck itself? 

[BMorina]

Thanks @Angel_Aka, I run it from my TV settings, so I assume this didnt go via puck. 

I will try again later via puck and report back.  Thanks again for your support.

[Angel_Aka]

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@BMorina wrote:

Thanks @Angel_Aka, I run it from my TV settings, so I assume this didnt go via puck. 

I will try again later via puck and report back.  Thanks again for your support.

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Yeah, the pucks can be susceptible to interference and require as fast and stable a connection as possible. The only way to find out what it's actually receiving is to run the network check from the Netflix app on the puck itself. 

Run it a few times later and see if the speed fluctuates. 

[BMorina]

@Angel_Aka Checked the connection several times of a two hour period , and got ranges from 89.74 - 90.41 Mbps

[Angel_Aka]

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@BMorina wrote:

@Angel_Aka Checked the connection several times of a two hour period , and got ranges from 89.74 - 90.41 Mbps

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In theory that should absolutely be more than enough... but if it's still not working on ethernet with WiFi turned off on the puck's network settings then I'd contact Sky and get the puck replaced. 

[BMorina · Accepted solution]

FYI - I played around with hdmi ports on my TV.  Moving the puck to hdmi1 on my TV seems to have solved my issue, at least for several hours at the moment.  
I saw some other posts were this was done but they reported that the issue came back after a couple of days. I will report back here is that is the case, else fingers crossed this is solved for good 🙏