Multiple Daily Modem Reboots

Please also post the *Downstream Power Level*, the *Upstream Power Level*, and the *SNR* (Signal to Noise Ratio) numbers.

What is the exact make and model number of the modem ?

Here you go:

Arris SB 8200

Connection

The status listed show the connection state of the cable modem. They are used by your service provider to evaluate theoperation of the cable modem.

Most of the downstream channel power levels are on the low side and they may be intermittently fluctuating even lower to out of spec levels. That can cause random disconnects, spontaneous re-booting of the modem, speed, packet loss, latency problems, and the un-bonding of channels.

In a self troubleshooting effort to try to obtain better connectivity / more wiggle room, check to see if there are there any excess/unneeded coax cable splitters in the line leading to the modem that can be eliminated/re-configured. Any splitters that remain should be high quality and cable rated for 5-1002 MHz, bi-directional, and no gold colored garbage types like GE, RadioShack, RCA, Philips, Leviton, Magnavox, and Rocketfish from big box stores like Home Depot, Lowes, Target, Wal-Mart etc. Splitters should be swapped with known to be good / new ones to test

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.

There are no splitters between the drop to my modem and the Comcast line is an underground access point. During my last tech visit, I was told that the line to my house was good, as well it should have been because it was installed a year ago, but they also stated that their line to the underground dropbox was supposed to be a temp line and it was checking bad. That temporary line has been there as long as I owend my house and that's over 10 years. 

Here's a pic of the dropbox:

https://imgur.com/Sa4PDGJ

The yellow cable is they one that was placed to my house.

Here's the line to the dropbox:

https://imgur.com/NBaAP9y

Then you'll need a tech out. Good luck !

But I have already had techs come out for the same thing already. I came here because I have seen where problems were escalated and I feel if I wait for another tech to come out to tell me the same thing again, I will move on because living with this unreliable connection is becoming untenable.

Bear in mind that if the premises facing techs can not find or fix a problem at your home, it is they who are responsible for escalating it to their line / network / maintenance dept. techs. The problem may lie beyond your home in the local neighborhood infrastructure somewhere but it is their S.O.P. to start at the home.
Good luck !