TV Signal becomes White Static Noise with Audio Pops

hi,

we started having same issue after about a year with no issues with 4k TV & cable box.  No reason for it as far as hardware changes.  A couple weeks ago, it worked while on but once tv was turned off, next time you come back we got white noise and crackling you describe; could only pull power out and let it go thru welcome/setup to correct it.  Real PITA. Tried same things you did, switched out  HDMI cable, changed HDMI inputs, etc.  TV is 4k JVC.  Finally swapped out for new BOX at Xfinity store, went thru setup, looked good.  But after a couple power ups, same thing.  Thought maybe downgrading signal to 1080 or lower would work, no luck.  But after I got white noise again, just for kicks I tried hitting the XFINITY button on remote to bring up menu, and guess what, the picture and sound came back fine.  So for now, my workaround is hitting XFINITY then Exit buttons until Comcast figures out what they changed as far as the signal strengths, etc.  

I just bought a LG c9 tv and I get same thing.  its definately coming thru my coax from home.  it resolves itself after 20-30 minutes...which is frustrating.  today its bad on nascar race on fox.  change a channel and its gone.  really hard to troubleshoot.

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@Waldo09 wrote:
Any updates or resolutions to this??? I just went from a 1080p box with no issues to an X1 4K box for my toshiba 4K tv and as of this morning every time I turn it off then turn it back on I get a black or sometimes white static screen and audio pops. I’ve tried everything from switching 6 different hdmi cables, tried every port, and reset with no luck. Tried different TVs with same outcome. I know my tv is fine as hooking up a 4K computer, Xbox and Roku will all act just fine through the same conditions. Tomorrow I can try to return the box but from what I’ve read this resolves nothing

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do you have the DVR attached to your TV HDMI1 (one) jack? are you leaving the dvr on 1080p when not watching 4k?

is there a fix for this? just tried getting a new box and the same issue exists.

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@Sue_N wrote:
Same problem but we just had a service call with all new fittings and all new cable run outside the house. Fine for two days and now pops and static all over again. So tired of paying through the nose for this terrible product!

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did you try swapping out the set top box and power supply?

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@im015055 wrote:
Good to know I'm not crazy but sad this is widespread and they haven't figured out how to fix it. Just had a service call today and the tech tried to say it was my TV HDMI port, but we switched my ROKU to HDMI and had no issues so thought it was the box. He swapped the box and its still happening. Luckily no issues when I switch to coaxial input but it creates a shadow/blurred display which is awful to watch. I need Comcast to figure this out.

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on the set top box with the noise, use the voice remote "about". what is the rest of the line to the right of "STB Version.."?