Arth's profile

Contributor

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50 Messages

Wednesday, January 2nd, 2019 9:00 AM

Closed

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?

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Regular Visitor

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5 Messages

6 years ago

Thanks. I do have the newest firmware update. I think I turned off the power-saving mode, but I tried that months ago only to discover it got turned back on after a previous update. I’ll try a new HDMI cable, as another poster suggested, before getting a new box. (I’m still not sure which of my recordings are local to my DVR and which are in the cloud or on Comcast’s server.)

Contributor

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532 Messages

6 years ago

If you look at your saved recordings in the xfinity stream app or online you only see the ones in the cloud.  If others show on the dvr they are only local.

Regular Visitor

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5 Messages

6 years ago

Excellent. Thanks!!

Official Employee

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1K Messages

6 years ago

Hey all,

 

Thank you all for posting about the No signal message. It is often referred to as a "handshake" issue.

 

Here are a few suggestions that have worked for some in the forums:

 

1. Disable eco saver mode on the cable box and TV

2. Replace HDMI cable

3. Bypass HDMI arc if you're using one

4. confirm with us that you're using the suggested firmware (you can send us a private message by clicking the comcast_support handle and then clicking send private message)

5. Swap out your box (we can help with that as well)

 

Ken

Frequent Visitor

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8 Messages

6 years ago

I wanted to share an update on my experience.  We have done nothing new in the last several weeks, but we have not had to unplug and reboot our cable box for over a week.  I wonder if there was a software update that fixed the issue.  I checked a few minutes ago  - we have release version 103.1.2, release timestamp dated 9/17/2019 at 1:23 pm, XRE Protocol version 2.8.0. Whatever the reason,  we are happy!  We just hope it continues. Fingers crossed.

 

(For the record: We first experienced this problem after I swapped our old DVR box due to malfunctions (wallpaper proradically popping up and freezing) for the new one earlier this summer.  The very first morning after I installed the new box, I had the handshake issue. We had a tech out, changed HDMI cables and HDMI slots, our tv is brand new (as of July 25) and  yet it continued.  I was not told that this was an ongoing issue.  It was only after I found this forum and the various posts that I realized this was a widespread issue with the new X1 boxes.)

New Poster

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1 Message

6 years ago

I had this same problem with a new televsion we just bought.

In desperation, I read the TV owner's manual.

In the system setup menu for HDMI the default setting was "Standard", but there was an "advanced" setting called "enhanced".   

I tried that and it worked and now it has worked for more than a week..

Hope this helps sombody else.

 

Paul Miller

New Poster

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1 Message

6 years ago

Are you still problem free?  This issue started for me a couple days ago....

Frequent Visitor

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12 Messages

6 years ago

. You return malfunctioning equipment and you get "refurbished" malfunctioning equipment back. I've returned a malfunctioning box only to have to drive back down to return the refurbised box on two seperate occasions.

We're experiencing this same issue. We turn our TV off for the night and you wake up in the morning to no signal. Only with us, pulling the power cord for a hard restart doesn't fix the issue. We get fed up and walk off only to return later and find we can turn the TV on and it will start up. No freaking idea what is happening, and Comcast is no help. We have a tech coming tomorrow, but I know all he's going to do is change the box and get it set up; we'll wake up tomorrow morning and the TV won't start up again.

New Poster

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2 Messages

6 years ago

I just had a tech out for the same issue today. Changed boxes and checked everything all good. So we got to talking and trying a few things. We unplugged the hdmi cable from the side ports and used one on the back of the tv and worked instantly. I have a hisense tv. Try it and see. Only thing we came up with is it’s possible that different hdmi ports are set for different input settings. Time will see if this solved the problem.

Frequent Visitor

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7 Messages

6 years ago

Similar issue here. My box suddenly stopped working with my Sony STR-DN860 receiver. Displaying black screen only. Welcome message comes up on reboot, then nothing. Attempted rebooting several times, multiple calls to Comcast tech support, 2 tech visits. 2nd tech finally mentioned that this is a know issue with 4K boxes and some receivers. Comcast has no known fix so far. Switching the box HDMI cable from the receiver to the TV (Sony Bravia XBR-65X800B) solved the issue. So cable box now outputs to receiver via TV’s HDMI ARC port rather than directly. Not an ideal solution but seems to work for the moment. Appears that Comcast’s last firmware update broke things, as the box has worked fine with a direct receiver connection since it was installed a year or so ago.

New Poster

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1 Message

6 years ago

quick fix ,sinse comcast wouldn't fix their problem. connect up the three cables to the television, red ,white and yellow. and then to the comcast box. set the television for input to av. the tv will turn on, then you can switch to hd , but of course you must go back to av to start all again. until comcast decides that they have a problem. which of course they dont. 

Frequent Visitor

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12 Messages

6 years ago

Having not been able to solve the ongoing problem with the new 4k boxs (three in total that we had to keep returning to the Comcast store and swapping over the course of four days), we went back to the older DVR box, the one with the clock on front, and we haven't had a problem since.

 

Comcast really needs to get their act together. With the amount they charge for their services, they should at the very least be reimbersing us for the ongoing techincal glitches being experienced with the equipment.

Contributor

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532 Messages

6 years ago

Personally I think everyone would have been better off if the xg1v4 box had a 'native' video output mode where it would only switch to 4k when the content was 4k.   Then the 99% of the time that it was sending 720p content no one would have that handshake problem.

Frequent Visitor

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8 Messages

6 years ago

I am having same issue!!! Extremely frustrating paying so much for nothing but issues. On top of no signal, they can't even get my package right

New Poster

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1 Message

6 years ago

Tried all of the methods!  Grr

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