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Re: X1 TV Box--Sporadic "NO SIGNAL" Message

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Contributor

Re: X1 TV Box--Sporadic "NO SIGNAL" Message

I have been experiencing sporadic no signal message when turning on tv from being off.  The tv input is correct.  The xfinity tv signal returns after refresh or reboot of x1 box.  xfinity technical support on phone just did refresh and said no problem.  Any suggestions for a more permanent fix.  I can replace coax to box and hdmi from box to tv  or replace box.  My small external box in bedroom works during the signal loss at main box and anyroom dvr continues to work.  Any thoughts?

Regular Visitor

Re: X1 TV Box--Sporadic "NO SIGNAL" Message

Any solution? I experience this as well except my box is in the basement so I have to use the app to restart. Another annoying glitch of Xfinity that I never had to deal with fios. This is why I don’t lock myself into contracts. The technology is not reliable.
Contributor

Re: X1 TV Box--Sporadic "NO SIGNAL" Message

I am having a comcast tech visit tomorrow to take a look at the x1 dvr box and the sporadic loss of signal.  It only happens when tv is off and I turn it on and I don't have a signal, requiring a reboot of box to reacquire signal.  I will post any info that helps if the tech figures it out.  

Expert

Re: X1 TV Box--Sporadic "NO SIGNAL" Message


@Arth wrote:

I am having a comcast tech visit tomorrow to take a look at the x1 dvr box and the sporadic loss of signal.  It only happens when tv is off and I turn it on and I don't have a signal, requiring a reboot of box to reacquire signal.  I will post any info that helps if the tech figures it out.  


if you mean your TV's text saying no signal, that is a function of the HDMI handshake. changing the HDMI TV port to a different live HDMI device then back to the DVR usually akes up the connection. 



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Contributor

Re: X1 TV Box--Sporadic "NO SIGNAL" Message

Well, comcast tech came out and replaced the x1 dvr box.   He thought the box might have a bad hdmi port with intermittent failure.   Everything seemed fine.  I turned off tv and several hours later I turned on tv to watch and I got no signal on my tv.  Thinking about trouble shooting, I got out a new hdmi cable and a another tv with hdmi port.  I removed the current hdmi cable from x1 box and replaced with new hdmi cable connected to different tv.  Still no signal.  I restarted x1 box and got signal.   I spoke again to tech and he suggested I reset power option in x1 system settings to "power off" to on.  He had heard this may resolve this dropped signal issue.  Obviously, two x1 boxes with the same issue appears not to be a box problem.  Contacted tech again for further action to resolve this ongoing issue.   Discussion of power option:  https://www.xfinity.com/support/articles/x1-power-save-faqs

New Poster

No signal and have to unplug power everytime

Everytime I power on my Tv with X1 remote I get a no signal message. I need to unplug the power on the x1 box and replying it in and the the signal will come through. This happens everytime I shut the tv off. This is the 2nd box I tried and the same issue happens. Could this be the hdmi cord or an incompatibility with the tv and X1 box? Comcast reps couldn’t figure it out. The TV is a Sony bravia 4K tv. It was the very first 4K tv to be released by Sony? Could it be something with the age of the Tv? 5 years old?
Expert

Re: No signal and have to unplug power everytime


@Shadysilvi wrote:
Everytime I power on my Tv with X1 remote I get a no signal message. I need to unplug the power on the x1 box and replying it in and the the signal will come through. This happens everytime I shut the tv off. This is the 2nd box I tried and the same issue happens. Could this be the hdmi cord or an incompatibility with the tv and X1 box? Comcast reps couldn’t figure it out. The TV is a Sony bravia 4K tv. It was the very first 4K tv to be released by Sony? Could it be something with the age of the Tv? 5 years old?

if this is the no-clock 4k X1 DVR version 4 it is a known problem comcast is working on. a quick fix when connection is lost is to use TV remote and change input to another HDMI working port (like roku, DVD, chromecast, etc), then change back. if you don't have a live port pulling and reinserting the HDMI cable end or reboot the box.



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Contributor

Re: No signal and have to unplug power everytime

we have a Vizio UHD 4K tv and have had this problem for months on the x1 satelite box.  Every day, when starting up, no signal.  Had to unplug / replug the box, wait, then its fine.  Until the next morning.  The tech said that it was most likely due to schedule daily updates.  I changed the schedule to a time frame when we were not around and still had the issue.  I figured it was the box.  Upstairs with the X1 box, we had a Hisense tv that worked great until it died on Tuesday.  So, I moved the Vizio and connected it to the X1, it worked fine for that day, convincing me that the issue was the truly the other box.  Now, 2 days in a row, in the morning, after being off for a long time (6+ hrs), when the Vizio is turned on, there is no signal.  It does not matter what HDMI port is used, no signal.  If you turn the box off / on, you get signal and all is well.  I have read many other forum posts and it appears that this a known issue, yet is unresolved.  

 

Due to the frustration, and amount of money we are paying, we are about to jump to satelite (dish, etc.)

Expert

Re: No signal and have to unplug power everytime


@EaglesRidge wrote:

we have a Vizio UHD 4K tv and have had this problem for months on the x1 satelite box.  Every day, when starting up, no signal.  Had to unplug / replug the box, wait, then its fine.  Until the next morning.  The tech said that it was most likely due to schedule daily updates.  I changed the schedule to a time frame when we were not around and still had the issue.  I figured it was the box.  Upstairs with the X1 box, we had a Hisense tv that worked great until it died on Tuesday.  So, I moved the Vizio and connected it to the X1, it worked fine for that day, convincing me that the issue was the truly the other box.  Now, 2 days in a row, in the morning, after being off for a long time (6+ hrs), when the Vizio is turned on, there is no signal.  It does not matter what HDMI port is used, no signal.  If you turn the box off / on, you get signal and all is well.  I have read many other forum posts and it appears that this a known issue, yet is unresolved.  

 

Due to the frustration, and amount of money we are paying, we are about to jump to satelite (dish, etc.)


use the voice remote on your 'satellite' box connected TV and say 'about'. what is the rest of the line to the right of STB version?



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New Poster

Re: X1 TV Box--Sporadic "NO SIGNAL" Message

I have this same issue. Started happening when I received the newer model cable box capable of Prime Video. If the TV is off for an extended period of time, the TV stops recognizing the HDMI signal. 

 

If I unplug the HDMI cable from the TV and plug it back in, it instantly starts working again. Restarting the cable box also fixes it. 

 

My power saver setting is turned to OFF.

 

There seems to be some issue with the way the cable box sends an HDMI signal while the box is idle.

Contributor

Re: X1 TV Box--Sporadic "NO SIGNAL" Message

After researching and talking to Comcast, I believe the problem with no signal at start up is caused by a improper hdmi "handshake" or signal transmission. Can be caused by a bad cable or loose connection, etc. I replaced cable and still had problem. Apparently, some TV's , I have a new Sony, will fail the hdmi handshake at turn on. I called Sony customer service and received no help. If the tv is turned on prior to cable box you have a greater chance of a successful handshake. The x1 dvr box never turns off so that option is not possible. Comcast did not have a suggested fix other than setting the power saver option to on. which turns off box after a long period of inactivity. That seems to have helped, although I still get the no signal problem but far less frequently. When that happens, I just restart the x1 box from my xfinity account app on my phone and signal is restored. Seems like a unresolved problem between the tv manufacturers and xfinity.
Expert

Re: X1 TV Box--Sporadic "NO SIGNAL" Message


@Arth wrote:
After researching and talking to Comcast, I believe the problem with no signal at start up is caused by a improper hdmi "handshake" or signal transmission. Can be caused by a bad cable or loose connection, etc. I replaced cable and still had problem. Apparently, some TV's , I have a new Sony, will fail the hdmi handshake at turn on. I called Sony customer service and received no help. If the tv is turned on prior to cable box you have a greater chance of a successful handshake. The x1 dvr box never turns off so that option is not possible. Comcast did not have a suggested fix other than setting the power saver option to on. which turns off box after a long period of inactivity. That seems to have helped, although I still get the no signal problem but far less frequently. When that happens, I just restart the x1 box from my xfinity account app on my phone and signal is restored. Seems like a unresolved problem between the tv manufacturers and xfinity.

this is a current firmware issue for the xg1v4 hd/4K dvr. no estimated time of fix.



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Contributor

Re: X1 TV Box--Sporadic "NO SIGNAL" Message

Thanks for informing me that this is an issue with the xfinity box and not my TV.   I will follow up with xfinity customer service and their local service staff to see what their time table is for this "firmware" fix to their box.  Seems odd that xfinity doesn't advise me of their equipment problem after discussing it with them numerous times and a home visit.

Contributor

Re: No signal and have to unplug power everytime

Hello @Rustyben,

 

We have the exact same issue. There is a "no signal" message on the TV every evening when we turn the TV back on.

 

When you suggest: "pulling and reinserting the HDMI cable end..."  do you mean remove the HDMI cable from the X1 box, the TV, or does it not matter?

 

Also, since you indicated Comcast knows of this issue, do you have any idea when and how it might be fixed?

 

Does the power save feature on the X1 box have anything to do with the issue?  We have it OFF.

 

Thank you.

Regular Visitor

Re: No signal and have to unplug power everytime

We had the same problem with a XG1V4 box.  The tech said it was because it was connected to an AV receiver that is not 4K compatible.  They gave us an older cable box XGV1V1.  It seems to have more latency when changing channels but it doesn't have the "No Signal" problem. 

 

Prior to the XG1V4,  we had an XG1V3 box that was defective (kept rebooting itself, sometimes every 5 minutes) but also did not have the "no signal" problem you describe.


@vadeltachi wrote:

Hello @Rustyben,

 

We have the exact same issue. There is a "no signal" message on the TV every evening when we turn the TV back on.

 

When you suggest: "pulling and reinserting the HDMI cable end..."  do you mean remove the HDMI cable from the X1 box, the TV, or does it not matter?

 

Also, since you indicated Comcast knows of this issue, do you have any idea when and how it might be fixed?

 

Does the power save feature on the X1 box have anything to do with the issue?  We have it OFF.

 

Thank you.



@vadeltachi wrote:

Hello @Rustyben,

 

We have the exact same issue. There is a "no signal" message on the TV every evening when we turn the TV back on.

 

When you suggest: "pulling and reinserting the HDMI cable end..."  do you mean remove the HDMI cable from the X1 box, the TV, or does it not matter?

 

Also, since you indicated Comcast knows of this issue, do you have any idea when and how it might be fixed?

 

Does the power save feature on the X1 box have anything to do with the issue?  We have it OFF.

 

Thank you.


 

Contributor

Re: X1 TV Box--Sporadic "NO SIGNAL" Message

Well, the no signal after failed hdmi handshake between tv and x1 dvr box continues on a intermittent occurence.  Today a new problem with x1 box occurred.  It failed to restart after power saver shut down the box.  I pressed the button on the  box and it restarted providing me a signal to tv.  I shut off the power saver at that point.  I have spoke to Xfinity personnel and they have told me they are asking if anyone knows what the problem is with the hdmi handshake  and will get back with me.  It's been a week and no return calls received.  Looking for solution from Xfinity!

Regular Visitor

Xfinity DVR no video when awakening

I have my Xfinity DVR set to shut down to save power. About 40% of the time when I turn on the tv and xfinity box, I get no video signal to the tv. Turning off the xfinity box and back on restores video. Is this a known problem with waking the box from power saver or an issue calling for a new box? HDMI connections are all ok. Really seems like a wake from sleep mode.

also, if I need to replace the box, will I lose recorded shows or are all recordings really just saved in the cloud?

Contributor

Re: Xfinity DVR no video when awakening

This whole no signal issue when turning on tv (aside from the power saver problem)  appears to be an ongoing problem of a hdmi handshake failure between x1 dvr box and the tv.  I have tried different tv's and different hdmi cables and had x1 dvr box replaced with same intermittent no signal failures.  Comcast tech recommended power saver option as a potential solution with the logic if the tv was on first before the dvr box the hdmi handshake would be successful.  I tried the power saver and thought it may work but I still have intermittant no signal requireing  restart of dvr box.  At least once the dvr box failed to restart or reawaken from power saver requieing a push on power button on dvr box.  Someone posted that it was a firmware problem with box but no solutions offered.

Official Employee

Re: Xfinity DVR no video when awakening

Bergmanmark, only the last 60 hours of recorded content is saved on the cloud. So yes, any content older than the last 60 hours would remain on the actual harddrive. 

 

It sounds like you could have some RF/signal issues going on here too. I'd be happy to take a look. Just shoot me a private message with your full name for help. 

 

KenF


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New Poster

Re: No signal and have to unplug power everytime

Have you tried just hitting GUIDE? It brings me to the guide without having to reboot.
Contributor

Re: No signal and have to unplug power everytime

For me when there is a no signal from a failed handshake the only solution is a reboot or restart
Frequent Visitor

Re: No signal and have to unplug power everytime

Ummmm Comcast?!? Solution? If the XG1v4-A is KNOWN to do this there should be a solution by now (this has been going on for close to a year and only seems to be getting worse) or there should be a monthly discount for the box until you fix it...in fact the box is technically failing multiple times a day it should be free until you've fixed it with firmware or a new model already. My husband and I pay over $200 a month for our services. Please get back to me personally Comcast I can't and won't sit on the phone for hours trying to explain this problem that is clearly laid out by many people here experiencing the same issue.
Official Employee

Re: No signal and have to unplug power everytime

Bretyboy, I am working with folks on the forums to bring this issue to engineering ops. Please send me a private message with your full name so I can add you to this list I'm compiling. We'll also attempt to troubleshoot as well. 


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Contributor

Re: X1 TV Box--Sporadic "NO SIGNAL" Message

The no signal after tv being off is caused by a failed hdmi connection handshake between dvr and your tv.  When you turn the tv on it looks for a hdmi source and when the handshake with the dvr fails you get no signal.   A reboot of dvr restores hdmi connection and you get your signal back. Xfinity is aware of the problem as they have indicated to me but it is not yet addressed completely.  I have tried different tvs with different hdmi cables with same results.   Changing hdmi cable inputs on tv seem to have no effect.   One thing that xfinity suggested reduces the intermittant no signal is to go to dvr settings and set your device power preferences to power saver on.  It appears that maybe if the tv powers up prior to dvr reawakening, the hdmi handshake is more successful.  Even with this I have noticed failure with no signal, but not as much.

Official Employee

Re: X1 TV Box--Sporadic "NO SIGNAL" Message

Arth, I've also been told that disabling UHD on your TV makes this issue intermittent rather than occurring every day. Do you have that option? I'm wondering if also changing the box update time, the power saving settins and the UHD settings is a workaround for now. 

 

Ken


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Expert

Re: X1 TV Box--Sporadic "NO SIGNAL" Message

fwiw my xg1v4 is connected only to a regular 1080p at 720p setting on the box and it has the issue intermittently. had no issue today after long overnight but found new xre and firmware today. 3.7p2s1 05/18 / 99.0.3 05/23/19 found 5/31 -- I'm hoping one of the changes fixes the HDCP (on HDMI) handahake issue and the newly returned ghosted deleted recrodings that you have to run 'sync DVR' to remove the extra listings. that was fixed over a year ago and returned in last 3 weeks.



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Contributor

Re: X1 TV Box--Sporadic "NO SIGNAL" Message

The no signal after tv being off is caused by a failed hdmi connection handshake between dvr and your tv.  When you turn the tv on it looks for a hdmi source and when the handshake with the dvr fails you get no signal.   A reboot of dvr restores hdmi connection and you get your signal back. Xfinity is aware of the problem as they have indicated to me but it is not yet addressed completely.  I have tried different tvs with different hdmi cables with same results.   Changing hdmi cable inputs on tv seem to have no effect.   One thing that xfinity suggested reduces the intermittant no signal is to go to dvr settings and set your device power preferences to power saver on.  It appears that maybe if the tv powers up prior to dvr reawakening, the hdmi handshake is more successful.  Even with this I have noticed failure with no signal, but not as much.   An xfinity rep indicated a firmware update is necessary for the box but apparently this has not been done.  An xfinity customer should not have to screw around with all this to maintain a signal.   The ball is in their court I believe!

Official Employee

Re: X1 TV Box--Sporadic "NO SIGNAL" Message

@Arth - We totally understand the frustration and our engineering team is working to address the issue asap. What firmware version do you currently have on your cable box? 


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Contributor

Re: X1 TV Box--Sporadic "NO SIGNAL" Message

Release Version listed:  99.0.3     Interesting today I turned on the TV and had no signal,  I unplugged the hdmi cable from xfinity dvr and replugged it and tv signal returned.  That never worked before!  Always had to reboot box to get signal back.  Thanks for any help!

Official Employee

Re: X1 TV Box--Sporadic "NO SIGNAL" Message

@Arth - Thank you for letting me know. This issue definitely causes a lot of frustration. I greatly appreciate your patience!


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New Poster

Re: X1 TV Box--Sporadic "NO SIGNAL" Message

I also have this issue. Tried power saver both ways, not much difference. I need to unplug power from box and reboot. Frustrations to have to wait for a service that I paid for....
Silver Problem Solver

Re: X1 TV Box--Sporadic "NO SIGNAL" Message


@CurtJ wrote:
I also have this issue. Tried power saver both ways, not much difference. I need to unplug power from box and reboot. Frustrations to have to wait for a service that I paid for....

deleted

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New Poster

Re: No signal and have to unplug power everytime

I'm having the same problem so many others are reporting.  With 4K box and Sony Bravia 4K tv.  Have to manually unplug the box and restart.

New Poster

Re: X1 TV Box--Sporadic "NO SIGNAL" Message

I have the same issue as everyone in the chain. The technician replaced the boxes in my house and said it was my samsung tv. Samsung said it is not and we tested all the HDMI ports with other devices and they work fine. I reboot at least twice a day and now i've started to have to do system refreshes every 24 hours. Why am I paying comcast for a headache? And how can I fix?

Contributor

Re: X1 TV Box--Sporadic "NO SIGNAL" Message

Hello, the last two times I lost signal at tv turn on, I unplugged the hdmi cable from the back of the xfinity dvr box and plugged it back in and the signal returned.  The is solution is new and never worked before always had to restart or reboot box previously.  Obviously, still the hdmi connection failure at startup but without rebooting required?

New Poster

Re: X1 TV Box--Sporadic "NO SIGNAL" Message

I am having the exact same issues with my X15 unit for my bedroom tv.  The only solution for my Samsung 4K tv, is to unplug the tv power and reinstal the power cord.  This apparently resets the hdmi handshake.  Still no resolution from Comcast.

New Poster

Re: X1 TV Box--Sporadic "NO SIGNAL" Message

I am leaving comcast. No resolution and they blame my tv
Expert

Re: X1 TV Box--Sporadic "NO SIGNAL" Message


@ksullivan99 wrote:
I am leaving comcast. No resolution and they blame my tv

only the xg1v4 has the issue and using the TV remote to change to a different input source (i use the Roku connection) then switching back to the DVR HDMI connection the link is enabled. when they find the problem they will fix it for everyone.



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Contributor

Re: X1 TV Box--Sporadic "NO SIGNAL" Message

I will try the input change process as you suggest the next time I find no signal at startup.  When this issue first started and for the last year, changing the input or the hdmi cable did not restore the hdmi connection and a reboot of dvr was required.  As I indicated,  the most recent no signal  I experienced was restored by just removing and replugging the hdmi cable from the dvr.  That would be nice to only have to change tv input with remote.  In any event,  it is a dvr box problem that needs to be addressed.

New Poster

Re: X1 TV Box--Sporadic "NO SIGNAL" Message

I’m leaving comcast. Customer service has made too many false promises and I pay too much to have this headache Disappointed
Official Employee

Re: X1 TV Box--Sporadic "NO SIGNAL" Message

ksullivan99, we don't want to see you leave. I'm sorry for the inconvenience, and we are aware of this issue. We're working hard to get this resolved as fast as possible. 


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New Poster

Re: X1 TV Box--Sporadic "NO SIGNAL" Message

You should make your service support and technicians aware as they told me it was my television then my box. Promised to be out then rescheduled etc. three months of having to reset my box twice a day. Unacceptable
New Poster

Re: X1 TV Box--Sporadic "NO SIGNAL" Message

Same problem here. Growing tired of manually unplugging the box.
Silver Problem Solver

Re: X1 TV Box--Sporadic "NO SIGNAL" Message


@ChrisGenna wrote:
Same problem here. Growing tired of manually unplugging the box.

Before you unplug it the next time, call 1800comcast and ask them to test your connection.

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New Poster

Re: X1 TV Box--Sporadic "NO SIGNAL" Message

Use your TV remote (not comcast) go into your TV settings and turn ECO MODE OFF.
Official Employee

Re: X1 TV Box--Sporadic "NO SIGNAL" Message

ChrisGenna-- thanks for posting--my 2 cents; make sure there isn't a signal leakage by making sure the connectors from your cable box to your TV are in tight. Also check to ensure the coaxial cable from the box to your outlet is in snug as well. If you send me a private message, I can also check out your signal levels and we and work together from there! 

 

Ken


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Contributor

Re: X1 TV Box--Sporadic "NO SIGNAL" Message

Checked Eco or power saving setting is off.  Not the solution to the failed hdmi handshake.  Only solution seems to be to unplug and replug hdmi cable from dvr or reboot dvr after failure.

 

Official Employee

Re: X1 TV Box--Sporadic "NO SIGNAL" Message

@Arth, @ChrisGenna

 

Sometimes cables in use can be an issue. Is the HDMI cable in use the original cable provided with the device? Have you tried using a different HDMI cable, just in case? 


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Contributor

Re: X1 TV Box--Sporadic "NO SIGNAL" Message

Yes, I have tried different cables to rule that out as an issue.

Official Employee

Re: X1 TV Box--Sporadic "NO SIGNAL" Message

@Arth, have you tried swapping for a new box?

 

I just want to make sure I cross my t's and dot my i's. Smiley Happy

 

If not, you can send me a private message so I can look into the account. 

 

I want to make sure you are taken care of. 


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