Internet disconnecting this whole week

[acheung]

Tech came out and said "everything looks good outside" but that also happen to be when the internet was working. I have to reset the modem each time and hope that it works again. He said I need a new modem. I have tightened all the connections I know of inside and this house is a new build.

Arris Surfboard SB6183

Not sure where my other 3 upstreams went.

Downstream Bonded Channels
Channel	Lock Status	Modulation	Channel ID	Frequency	Power	SNR	Corrected	Uncorrectables
1	Locked	QAM256	17	553750000 Hz	-8.0 dBmV	41.3 dB	0	0
2	Locked	QAM256	13	529750000 Hz	-7.7 dBmV	41.8 dB	0	0
3	Locked	QAM256	14	535750000 Hz	-7.6 dBmV	41.7 dB	1	0
4	Locked	QAM256	15	541750000 Hz	-7.3 dBmV	39.9 dB	0	0
5	Locked	QAM256	16	547750000 Hz	-7.7 dBmV	41.6 dB	0	0
6	Locked	QAM256	18	559750000 Hz	-7.7 dBmV	41.0 dB	26	0
7	Locked	QAM256	19	565750000 Hz	-8.1 dBmV	41.0 dB	0	0
8	Locked	QAM256	20	571750000 Hz	-8.1 dBmV	41.0 dB	1	0
9	Locked	QAM256	21	577750000 Hz	-8.2 dBmV	41.0 dB	0	0
10	Locked	QAM256	22	583750000 Hz	-8.0 dBmV	40.9 dB	0	0
11	Locked	QAM256	23	589750000 Hz	-8.6 dBmV	40.2 dB	1	0
12	Locked	QAM256	24	595750000 Hz	-8.3 dBmV	40.0 dB	203	415
13	Locked	QAM256	25	601750000 Hz	-8.2 dBmV	39.9 dB	102	194
14	Locked	QAM256	26	607750000 Hz	-8.6 dBmV	40.6 dB	1	0
15	Locked	QAM256	27	613750000 Hz	-8.3 dBmV	40.9 dB	0	0
16	Locked	QAM256	28	619750000 Hz	-8.4 dBmV	40.8 dB	0	0

Upstream Bonded Channels
Channel	Lock Status	US Channel Type	Channel ID	Symbol Rate	Frequency	Power
1	Locked	ATDMA	1	5120 Ksym/sec	36500000 Hz	57.0 dBmV

Time	Priority	Description
Sat Jun 27 09:37:42 2020	Critical (3)	No Ranging Response received - T3 time-out
Sat Jun 27 09:37:51 2020	Critical (3)	Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:38:07 2020	Critical (3)	No Ranging Response received - T3 time-out
Sat Jun 27 09:38:51 2020	Critical (3)	Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:39:05 2020	Critical (3)	No Ranging Response received - T3 time-out
Sat Jun 27 09:39:15 2020	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:39:17 2020	Critical (3)	No Ranging Response received - T3 time-out
Sat Jun 27 09:39:38 2020	Critical (3)	Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:39:56 2020	Critical (3)	No Ranging Response received - T3 time-out
Sat Jun 27 09:40:06 2020	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:40:16 2020	Critical (3)	No Ranging Response received - T3 time-out
Sat Jun 27 09:40:26 2020	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:40:38 2020	Critical (3)	No Ranging Response received - T3 time-out
Sat Jun 27 09:40:48 2020	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:40:49 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:40:54 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:40:55 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:40:58 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:40:59 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:41:01 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:41:02 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:41:05 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:41:06 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:41:07 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:41:08 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:41:12 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:41:12 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:41:13 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:41:14 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:41:15 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:41:16 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:41:17 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:41:18 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:41:42 2020	Critical (3)	Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:41:55 2020	Critical (3)	No Ranging Response received - T3 time-out
Sat Jun 27 09:42:10 2020	Critical (3)	Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:42:15 2020	Critical (3)	No Ranging Response received - T3 time-out
Sat Jun 27 09:42:37 2020	Critical (3)	Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:42:52 2020	Critical (3)	No Ranging Response received - T3 time-out
Sat Jun 27 09:43:02 2020	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:43:03 2020	Critical (3)	No Ranging Response received - T3 time-out
Sat Jun 27 09:43:50 2020	Critical (3)	Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:44:00 2020	Critical (3)	No Ranging Response received - T3 time-out
Sat Jun 27 09:44:10 2020	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:44:15 2020	Critical (3)	No Ranging Response received - T3 time-out
Sat Jun 27 09:44:35 2020	Critical (3)	Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:44:50 2020	Critical (3)	No Ranging Response received - T3 time-out
Sat Jun 27 09:45:00 2020	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:45:08 2020	Critical (3)	No Ranging Response received - T3 time-out
Sat Jun 27 09:45:18 2020	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:45:35 2020	Critical (3)	No Ranging Response received - T3 time-out
Sat Jun 27 09:46:09 2020	Critical (3)	Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:46:15 2020	Critical (3)	No Ranging Response received - T3 time-out
Sat Jun 27 09:46:35 2020	Critical (3)	Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:46:44 2020	Critical (3)	No Ranging Response received - T3 time-out
Sat Jun 27 09:46:54 2020	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:46:56 2020	Critical (3)	No Ranging Response received - T3 time-out
Sat Jun 27 09:47:18 2020	Critical (3)	Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:47:21 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:47:21 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:47:23 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:47:24 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:47:42 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:47:43 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:47:45 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:48:08 2020	Critical (3)	Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:48:16 2020	Critical (3)	No Ranging Response received - T3 time-out
Sat Jun 27 09:48:39 2020	Critical (3)	Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:48:52 2020	Critical (3)	No Ranging Response received - T3 time-out
Sat Jun 27 09:49:02 2020	Critical (3)	No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:49:05 2020	Critical (3)	No Ranging Response received - T3 time-out
Sat Jun 27 09:49:49 2020	Critical (3)	Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:49:54 2020	Critical (3)	No Ranging Response received - T3 time-out
Sat Jun 27 09:50:14 2020	Critical (3)	Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:50:24 2020	Critical (3)	No Ranging Response received - T3 time-out
Sat Jun 27 09:50:35 2020	Critical (3)	Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 09:50:41 2020	Critical (3)	No Ranging Response received - T3 time-out
Sat Jun 27 09:51:02 2020	Critical (3)	TLV-11 - Illegal Set operation failed;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.1;CM-VER=3.0;
Sat Jun 27 09:54:04 2020	Critical (3)	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.1;CM-VER=3.0;
Time Not Established	Critical (3)	Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Sat Jun 27 10:01:57 2020	Critical (3)	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.1;CM-VER=3.0;
Sat Jun 27 10:02:36 2020	Critical (3)	Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.1;CM-VER=3.0;
Sat Jun 27 10:03:02 2020	Critical (3)	Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Sat Jun 27 10:03:07 2020	Critical (3)	No Ranging Response received - T3 time-out
Sat Jun 27 10:03:29 2020	Critical (3)	TLV-11 - Illegal Set operation failed;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.1;CM-VER=3.0;
Time Not Established	Critical (3)	Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Critical (3)	Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=d4:04:cd:98:94:ff;CMTS-MAC=04:2a:e2:c6:3a:3c;CM-QOS=1.0;CM-VER=3.0;
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out
Time Not Established	Notice (6)	Honoring MDD; IP provisioning mode = IPv6
Sat Jun 27 10:08:06 2020	Warning (5)	Unicast DSID PSN startup error

[EG]

The upstream power is way out of spec. 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.

[acheung]

I only have one splitter that Comcast installed. It has one in and 4 outs. One goes to the living room with the modem and the other 3 go to each bedroom but have not been connected to anything. I will check each connection for corrosion. I can't post the picture of the street connection to the main outside the house but there are wires exposed in that connection. (EDIT: those seem to just be the cable support strands)

I tightened everything. No corrosion. Let see if everything stays connected.

Downstream Bonded Channels
Channel	Lock Status	Modulation	Channel ID	Frequency	Power	SNR	Corrected	Uncorrectables
1	Locked	QAM256	17	553750000 Hz	-7.1 dBmV	40.4 dB	915	1718
2	Locked	QAM256	13	529750000 Hz	-6.8 dBmV	40.9 dB	132	215
3	Locked	QAM256	14	535750000 Hz	-6.7 dBmV	40.9 dB	45	112
4	Locked	QAM256	15	541750000 Hz	-6.6 dBmV	39.3 dB	59	103
5	Locked	QAM256	16	547750000 Hz	-6.8 dBmV	40.7 dB	121	209
6	Locked	QAM256	18	559750000 Hz	-6.8 dBmV	40.6 dB	130	689
7	Locked	QAM256	19	565750000 Hz	-6.9 dBmV	40.4 dB	221	411
8	Locked	QAM256	20	571750000 Hz	-7.2 dBmV	40.3 dB	63	253
9	Locked	QAM256	21	577750000 Hz	-7.0 dBmV	40.4 dB	138	424
10	Locked	QAM256	22	583750000 Hz	-7.1 dBmV	40.3 dB	199	848
11	Locked	QAM256	23	589750000 Hz	-7.5 dBmV	40.0 dB	44	219
12	Locked	QAM256	24	595750000 Hz	-7.3 dBmV	40.1 dB	72	237
13	Locked	QAM256	25	601750000 Hz	-7.5 dBmV	40.1 dB	371	475
14	Locked	QAM256	26	607750000 Hz	-7.6 dBmV	40.1 dB	118	232
15	Locked	QAM256	27	613750000 Hz	-7.5 dBmV	40.1 dB	123	215
16	Locked	QAM256	28	619750000 Hz	-7.5 dBmV	40.1 dB	116	184

Upstream Bonded Channels
Channel	Lock Status	US Channel Type	Channel ID	Symbol Rate	Frequency	Power
1	Locked	ATDMA	1	5120 Ksym/sec	36500000 Hz	45.5 dBmV
2	Locked	ATDMA	2	5120 Ksym/sec	30100000 Hz	45.5 dBmV
3	Locked	ATDMA	3	5120 Ksym/sec	23700000 Hz	46.5 dBmV
4	Locked	ATDMA	4	5120 Ksym/sec	17300000 Hz	46.5 dBmV

[EG]

Wow ! The upstream power is way down now. It should not be making such wide swings like that. There is something intermittent going on with the line / connection.