Hi there - my modem is a CM500 and just recently the upstream light has turned to solid amber which is causing me some connection issues. Below are my cable connections and event logs.Thank you in advance!

nel	Lock Status	Modulation	Channel ID	Frequency	Power	SNR	Correctables	Uncorrectables
1	Locked	QAM256	14	243000000 Hz	4.2 dBmV	41.6 dB	0	0
2	Locked	QAM256	1	165000000 Hz	4 dBmV	41.9 dB	0	0
3	Locked	QAM256	2	171000000 Hz	4.5 dBmV	42.3 dB	0	0
4	Locked	QAM256	3	177000000 Hz	4.6 dBmV	41.9 dB	0	0
5	Locked	QAM256	4	183000000 Hz	4.8 dBmV	41.5 dB	0	0
6	Locked	QAM256	5	189000000 Hz	4.9 dBmV	42.3 dB	0	0
7	Locked	QAM256	6	195000000 Hz	5.1 dBmV	42.5 dB	0	0
8	Locked	QAM256	7	201000000 Hz	5.1 dBmV	42.2 dB	0	0
9	Locked	QAM256	8	207000000 Hz	5.2 dBmV	42.4 dB	0	0
10	Locked	QAM256	9	213000000 Hz	5.1 dBmV	41.7 dB	0	0
11	Locked	QAM256	10	219000000 Hz	5.1 dBmV	42.3 dB	0	0
12	Locked	QAM256	11	225000000 Hz	5.1 dBmV	42.2 dB	0	0
13	Locked	QAM256	12	231000000 Hz	4.9 dBmV	41.8 dB	0	0
14	Locked	QAM256	13	237000000 Hz	4.6 dBmV	41.7 dB	0	0
15	Locked	QAM256	15	249000000 Hz	4.4 dBmV	41.4 dB	0	0
16	Locked	QAM256	16	255000000 Hz	4.5 dBmV	41.2 dB	0	0

Channel	Lock Status	US Channel Type	Channel ID	Symbol Rate	Frequency	Power
1	Locked	ATDMA	1	5120 Ksym/sec	36800000 Hz	43.8 dBmV
2	Not Locked	Unknown	0	0 Ksym/sec	0 Hz	0.0 dBmV
3	Not Locked	Unknown	0	0 Ksym/sec	0 Hz	0.0 dBmV
4	Not Locked	Unknown	0	0 Ksym/sec	0 Hz	0.0 dBmV

Time	Priority	Description
1970-1-1, 00:00:36	Warning (5)	DHCP WARNING - Non-critical field invalid in response ;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=94:d4:69:55:9e:ad;CM-QOS=1.0;CM-VER=3.0;
1970-1-1, 00:00:34	Notice (6)	Honoring MDD; IP provisioning mode = IPv4
2024-11-20, 00:47:06	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2024-11-20, 00:47:05	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2024-11-20, 00:47:02	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2024-11-20, 00:47:01	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2024-11-20, 00:47:00	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2024-11-20, 00:46:58	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2024-11-20, 00:46:56	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2024-11-20, 00:46:54	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2024-11-20, 00:46:53	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2024-11-20, 00:46:52	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2024-11-20, 00:46:51	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2024-11-20, 00:46:50	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2024-11-20, 00:45:52	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2024-11-20, 00:45:52	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2024-11-20, 00:45:50	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2024-11-20, 00:45:50	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2024-11-20, 00:45:45	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2024-11-20, 00:45:45	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2024-11-20, 00:45:44	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2024-11-20, 00:45:43	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2024-11-20, 00:45:41	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2024-11-20, 00:45:41	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2024-11-20, 00:45:39	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2024-11-20, 00:45:39	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2024-11-20, 00:45:38	Critical (3)	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=94:d4:69:55:9e:ad;CM-QOS=1.1;CM-VER=3.0;
2024-11-20, 00:45:37	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=94:d4:69:55:9e:ad;CM-QOS=1.1;CM-VER=3.0;
2024-11-20, 00:45:21	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=94:d4:69:55:9e:ad;CM-QOS=1.1;CM-VER=3.0;
2024-11-20, 00:45:16	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=94:d4:69:55:9e:ad;CM-QOS=1.1;CM-VER=3.0;
1970-1-1, 00:00:21	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2024-11-11, 10:20:51	Critical (3)	No Ranging Response received - T3 time-out;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=94:d4:69:55:9e:ad;CM-QOS=1.0;CM-VER=3.0;
2024-11-11, 10:20:44	Critical (3)	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=94:d4:69:55:9e:ad;CM-QOS=1.1;CM-VER=3.0;
2024-11-11, 10:20:22	Critical (3)	SYNC Timing Synchronization failure - Failed to receive MAC SYNC frame within time-out period;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=94:d4:69:55:9e:ad;CM-QOS=1.1;CM-VER=3.0;
2024-11-11, 05:08:03	Critical (3)	DHCP FAILED - Discover sent, no offer received;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=94:d4:69:55:9e:ad;CM-QOS=1.0;CM-VER=3.0;
2024-11-11, 05:07:53	Critical (3)	No Ranging Response received - T3 time-out;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=94:d4:69:55:9e:ad;CM-QOS=1.0;CM-VER=3.0;
2024-11-11, 05:07:26	Critical (3)	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=94:d4:69:55:9e:ad;CM-QOS=1.1;CM-VER=3.0;
2024-10-16, 10:28:08	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=94:d4:69:55:9e:ad;CM-QOS=1.1;CM-VER=3.0;
2024-10-16, 10:28:04	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=94:d4:69:55:9e:ad;CM-QOS=1.1;CM-VER=3.0;
2024-10-7, 08:41:10	Critical (3)	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=28:80:88:c5:6e:88;CMTS-MAC=94:d4:69:55:9e:ad;CM-QOS=1.1;CM-VER=3.0;

Forum Discussion

CM500 - Upstream light is Amber