TV screen mysteriously blacks out at ~ 7:00 PM EDT once per week. Then TV Picture/sound spontaneously return after 45 minutes

@user_c19bcf  Were you logged in when you tried it.

@user_c19bcf, thank you for taking the time to try and send that private message to us, we're definitely still in your corner on this. Are you able to try to send us a message through a different device or browser? 

Yes, I was logged in and all.

I can Copy & Paste the pertinent message & send it thru Comcast e-mail (via Google Chrome)  but don't have knowledge of a corresponding "Comcast employee" reception e-mail address  (Guess I am limited to getting the "imbedded icons" to work ( ?)

What follows is the content of the attempted Message:  

My Samsung Smart TV screen Picture+sound blacks out about once per week (at about 7:00 PM EDT),  and is unresponsive to any troubleshooting attempts (Re-Booting, etc.). Some of the Xfinity messages appearing on TV screen during this 'black-out period' may say:

"We are currently loading your program guide .. ..", etc. Such content may reappear three or more times. The 5 min. countdowns re-start several times but never make it past 140 seconds.  TV screen picture/sound then spontaneously return to apparent normal function after about 45 minutes. During these episodes the same (live TV) program can be seemingly viewed OK via a Dell desktop computer monitor. 

All connection (TV: Voice; Internet) are hardwired. The specific Xfinity TV Box, Xfinity Modem, etc. have hardwired cable configurations. The hardware is from the original Comcast installation.

Addendum: In addition to the above (and occurring within the last year), The Live TV broadcast picture+sound  (ABC, CBS, NBC) may “Freeze” for up to a minute during the same time period as above. Also, when attempting to use the “On Demand” feature on the Xfinity Remote,  the TV picture+sound  will star pixilating/degrading after about 15 minutes, thus, making the program unwatchable.  When accessing ‘previously broadcast programs’ via the Internet, the picture+sound will ”freeze” after about 20 minutes, and needs to be repeatedly “re-clicked” in order to re-start the streaming.

Any suggestions ??   

@user_c19bcf, thank you for taking the time to be so detailed in your messages, it helps a ton to get us on the same page. I also appreciate the fact you've been working on this for some time, and so I can only imagine how you feel about this constant blackout. If I was in your shoes I would be wanting a permanent fix, and I'm with you until we find a solution. I'd like to run some targeted troubleshooting steps, but we'll need to start a private chat through this platform to do so. Are you able to clear your cache/cookies to see if that allows you to send a private message?