Internet randomly going out

First. When these outages occur, are they being officially indicated with any info about them here ?;

https://www.xfinity.com/support/status 

Use a cell phone internet service, a public WiFi hotspot, or a neighbor's internet if you need to in order to check it.

Or you can use their Xfinity App: https://www.xfinity.com/apps 

Ok, what do the modem's signal status values look like ? Try getting them here; http://192.168.100.1 or here http://10.0.0.1 

Please copy all of the text in its entirety of the *Downstream Power Levels*, the *SNR's* (Signal to Noise Ratios), and the *Upstream Power Level* numbers and paste them into your next post.

What is the exact make and model number of the modem / gateway device ?

Is this with a WiFi connection ?

@user_qu0y41 

The pic was removed from your post due to it containing what they consider to be personal information (Transaction ID). Really need to see the signal values to be able to advise further. admin is the default username, and password is the default password for the 10.0.0.1 address. Copy and paste and paste all of the text into your next post as was stated. Don't post an image.

@user_qu0y41 

The upstream power is too high / out of spec. And the downstream power is on the low / weak side as well. That can cause random disconnects, spontaneous rebooting of the modem, speed, packet loss, latency problems, and the unbonding of channels.

In an effort to try to obtain better connectivity / more wiggle room, check to see if there are any excess/unneeded coax cable splitters in the line leading to the modem that can be eliminated/reconfigured. Any splitters that remain should be high quality and cable rated for 5-1002 MHz, bi-directional, and no gold colored garbage from Home Depot, Target, Wal-Mart, etc. Splitters should be swapped with known to be good / new ones to test.

Also, check the coax cable for any damage such as cuts, nicks, abrasions, kinks, sharp bends, animal chews.

If there aren't any unneeded splitters that can be eliminated and if your coax wiring setup can't be reconfigured so that there is a single two-way splitter connected directly off of the drop from the street / pole with one port feeding the modem and the other port feeding the rest of the house/equipment with additional splits as needed and you've checked all the wiring and fittings for integrity and tightness and refresh them by taking them apart then check for and clean off any corrosion / oxidation on the center wire and put them back together again, then perhaps it's best to book a tech visit to investigate and correct.

Good luck with it !

Good thought ! But a Comcast tech may not be allowed to work on internal building coax wiring, as it is typically owned by the owner / landlord of the building, and it is their responsibility to maintain it. (YMMV). You may want to contact the owner / property management company about this. 

@user_qu0y41 @XfinityOrlandoM 

Please circle back here and post any possible solutions for the issue here in these open public forums so that all readers here may benefit from the exchange / info. This is in keeping with the spirit for which these public help forums were originally intended. Thank you.

Thanks for the update ! Hope things hold up for you ! Best of luck !!