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Rescuecheck
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6 Messages

Wednesday, March 14th, 2018 7:00 PM

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XG1v4 4k DVR no signal to TV blue screen

Works fine until I switch HDMI input to other source like Xbox or Blu-ray then when I switch back to XG1v4 the TV displays a blue screen. I have to manually disconnect the HDMI cable from the back of the XG1v4 and plug it back in to watch my TV shows. I believe this is being caused by a failed HDCP "handshake" between the XG1v4 and my Samsung KS8500. Since this started happening only after upgrading from the old X1 DVR to the new XG1v4, I have to blame the newest component. I read another post on blue screen issues and laughed when the "service expert" suggested a short with the TV. Please don't insult me like that. And yes, I've already disconnected power and coaxial cable and waited 5 minutes and reconnected and It still does it. I swapped HDMI cords to a high quality cable, and tried different HDMI inputs on the TV. I don't think I should have to "trick" the XG1v4 to re-establish signal with my TV by pulling the HDMI cable every time it blue screens.

What's the solution?

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Stevencs1043

New Poster

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5 Messages

7 years ago

On your remote, hit enter enter 1080. This will change the input to 1080i and then it usually turns right on for me. You just have to change it back.

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Rustyben

Expert

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24.6K Messages

7 years ago

@Stevencs1043 wrote:
On your remote, hit enter enter 1080. This will change the input to 1080i and then it usually turns right on for me. You just have to change it back.

that will stop the 4k output. just go into settings, power and turn off powersave. on the TV turn off CEC or the brand's same function to stop the TV from telling the X1 set top box to turn off (in this case go into powersave).

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Juskray47

Contributor

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23 Messages

7 years ago

Yep....I’m on my 3rd XG1.  Had a tech out again last week.   Changed DVR unit, remote, and HDMI cable...again.   No surprise, same issues as when I changed to Xfinity.

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Rustyben

Expert

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24.6K Messages

7 years ago

@Juskray47 wrote:

Yep....I’m on my 3rd XG1.  Had a tech out again last week.   Changed DVR unit, remote, and HDMI cable...again.   No surprise, same issues as when I changed to Xfinity.

next time that happens try pressing channel up on the Xfinity remote control. does the DVR come out of power save after a few seconds? be sure your TV's settings for CEC or automated power setting that is turning off the DVR (via signals on the HDMI cable).

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Davesirus

New Poster

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1 Message

7 years ago

Same problem, same things done to correct, still have same problem, Sony or Comcast, don't care, will not use or purchase either products, recommend you do the same, maybe the will get off their assets and fix problem ,don't count on it...

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waddabilly

Regular Visitor

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1 Message

7 years ago

I am experiencing this exact issue with XG1v4 and Vizio P65-E1.

If the TV has been off for 10-12 hours, there is no signal received after turning on the tv.

Energy save is turned off. Issue only occurs at 2160p.

The fastest way to fix it is to unplug the HDMI from the back of the XG1v4, and plug back in. That generally fixes the problem.

Stupid question, how do I send someone a direct message?

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CCAndrew

Gold Problem Solver

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25.9K Messages

7 years ago

Try pushing the channel up to re-establish, I have the same tv and settings and this recently started. Checked power preferences and they were on, so double check that

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Dzl

New Poster

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4 Messages

7 years ago

Well i have my second 4k hdr tv ( tried a diffent brand to confirm the problem is with comcast) now and when i turn on in the morning i get the "no signal" message.
Tried changing channel and changing input but still wont hdmi handshake w comcast xfinity box. Have to go through the lengthy comcast box pull the power to force a reset and wait 5 minutes for the box to come back up.
This is ridiculus that a problem has remained unsolved for so long.
Calling tech support is a joke.
Im an electrical engineer and it is so frustrating tryi g to co.municate with their helpdesk.
Please come up with a software update to correct this.

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MNtundraRET

Gold Problem Solver

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5.9K Messages

7 years ago

@waddabilly wrote:
I am experiencing this exact issue with XG1v4 and Vizio P65-E1.

If the TV has been off for 10-12 hours, there is no signal received after turning on the tv.

Energy save is turned off. Issue only occurs at 2160p.

The fastest way to fix it is to unplug the HDMI from the back of the XG1v4, and plug back in. That generally fixes the problem.

Stupid question, how do I send someone a direct message?

Stupid question, how do I send someone a direct message?

It is against Forum rules to PM any Comcast forum employee or Expert.

On a  a future post please ask permission from the person you wish to PM. They will reply if they except your reason for asking to PM.

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Juskray47

Contributor

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23 Messages

7 years ago

I wish I was as optimistic.  

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Juskray47

Contributor

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23 Messages

7 years ago

No luck with this suggestion.

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Chasehuck

New Poster

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3 Messages

7 years ago

Spoke with a rep last night after going through all the solutions suggested here.. I get a no signal on my Vizio p65 4K. I thought it was due to it going to sleep after a certain amount of time, however the rep told me to adjust the system update time to see if that was causing the issue... and sure enough after changing to 6pm instead of running at 4am, I turned the tv on next day with no issue. However turned it back on at 9pm and there was the no signal.. do others see the same thing?

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Rustyben

Expert

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24.6K Messages

7 years ago

@Chasehuck wrote:
Spoke with a rep last night after going through all the solutions suggested here.. I get a no signal on my Vizio p65 4K. I thought it was due to it going to sleep after a certain amount of time, however the rep told me to adjust the system update time to see if that was causing the issue... and sure enough after changing to 6pm instead of running at 4am, I turned the tv on next day with no issue. However turned it back on at 9pm and there was the no signal.. do others see the same thing?

do you have power save function turned off?

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Chasehuck

New Poster

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3 Messages

7 years ago

Yes I have Powersave off.  Doesn't matter since the box will restart every night (2-4am) regardless if it's on or off - that seems to be where the connection is lost.

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Rustyben

Expert

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24.6K Messages

7 years ago

@Chasehuck wrote:

Yes I have Powersave off.  Doesn't matter since the box will restart every night (2-4am) regardless if it's on or off - that seems to be where the connection is lost.

Is the set top box connected directly to the TV via HDMI? if so would you check the port using a flashlight or use the TV's remote to navigate to the HDMI capability of that port and be sure it is not a special port (example: CEC) and turn off the feature for that HDMI port or move the HDMI connector to a different port where the feature (like CEC) is not performed. The turning off of the TV when the set top box is connected to a CEC enabled port will put the set top box into standby which will turn on powersave mode which removes all video on the HDMI connector. ComcastAndrew has said on other posts to check to see if the STB is in standby mode by pressing the up channel button or the Xfinity (menu) button to cause the STB to leave powersave mode. The change in modes can take several seconds.

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