I have a Motorola SURFboard SB5101 (it's ancient, I know) that continues to reboot 10 or more times a day. It was originally connected to an inside splitter and had an Upstream power value ranging from 51.5 - 53.0 dBmV. I have since removed the modem from the splitter and upstream values are now around the 47-48 dMbV mark. I thought the splitter might have been the problem but the modem continues to reboot.
I'm aware that upgrading to a D3 modem may help, but I've seen several posts where upgrading the modem didn't help others in the same situation.
I have included Signal and Log info. Can anyone give me some guidance on how to fix this issue?
Downstream Value
Frequency 813000000 Hz
Signal To Noise Ratio 37.5 dB
Power Level -3.4 dBmV
Upstream Value
Channel ID 2
Frequency 23696000 Hz
Power 47.7 dBmV
2014-08-14 12:49:23 6-Notice I401.0 TLV-11 - unrecognized OID
1970-01-01 00:00:35 5-Warning D003.0 DHCP WARNING - Non-critical field invalid in response ;CM-MAC=
1970-01-01 00:00:23 3-Critical R002.0 No Ranging Response received - T3 time-out
1970-01-01 00:00:22 3-Critical U002.0 UCD invalid or channel unusable
1970-01-01 00:00:15 3-Critical R002.0 No Ranging Response received - T3 time-out
1970-01-01 00:00:12 3-Critical U002.0 UCD invalid or channel unusable
1970-01-01 00:00:08 3-Critical T001.0 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
1970-01-01 00:00:08 6-Notice M571.1 Ethernet link up - ready to pass packets
2014-08-14 12:48:34 6-Notice M573.0 Modem Is Shutting Down and Rebooting...
2014-08-14 12:48:34 3-Critical R004.0 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance o
2014-08-14 12:48:11 4-Error C401.0 DCC-ACK not received
2014-08-14 11:24:04 6-Notice I401.0 TLV-11 - unrecognized OID
1970-01-01 00:00:20 5-Warning D003.0 DHCP WARNING - Non-critical field invalid in response ;CM-MAC=
1970-01-01 00:00:11 3-Critical U002.0 UCD invalid or channel unusable
1970-01-01 00:00:08 6-Notice M571.1 Ethernet link up - ready to pass packets
2014-08-14 11:22:29 3-Critical T001.0 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
2014-08-14 10:48:12 6-Notice I401.0 TLV-11 - unrecognized OID
1970-01-01 00:00:33 5-Warning D003.0 DHCP WARNING - Non-critical field invalid in response ;CM-MAC=
1970-01-01 00:00:22 3-Critical R002.0 No Ranging Response received - T3 time-out
1970-01-01 00:00:20 3-Critical U002.0 UCD invalid or channel unusable
1970-01-01 00:00:14 3-Critical R002.0 No Ranging Response received - T3 time-out
1970-01-01 00:00:12 3-Critical U002.0 UCD invalid or channel unusable
1970-01-01 00:00:08 3-Critical T001.0 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
1970-01-01 00:00:08 6-Notice M571.1 Ethernet link up - ready to pass packets
2014-08-14 10:47:24 6-Notice M573.0 Modem Is Shutting Down and Rebooting...
2014-08-14 10:47:24 3-Critical R004.0 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance o
2014-08-14 10:47:01 4-Error C401.0 DCC-ACK not received
2014-08-13 23:40:35 6-Notice I401.0 TLV-11 - unrecognized OID
1970-01-01 00:00:29 5-Warning D003.0 DHCP WARNING - Non-critical field invalid in response ;CM-MAC=
1970-01-01 00:00:20 3-Critical R002.0 No Ranging Response received - T3 time-out
1970-01-01 00:00:18 3-Critical U002.0 UCD invalid or channel unusable
1970-01-01 00:00:16 3-Critical R002.0 No Ranging Response received - T3 time-out
1970-01-01 00:00:13 3-Critical U002.0 UCD invalid or channel unusable
1970-01-01 00:00:08 3-Critical T001.0 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
1970-01-01 00:00:08 6-Notice M571.1 Ethernet link up - ready to pass packets
2014-08-13 23:39:52 6-Notice M573.0 Modem Is Shutting Down and Rebooting...
2014-08-13 23:39:52 3-Critical R004.0 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance o
2014-08-13 23:39:29 4-Error C401.0 DCC-ACK not received
2014-08-13 20:09:53 6-Notice I401.0 TLV-11 - unrecognized OID
1970-01-01 00:00:35 5-Warning D003.0 DHCP WARNING - Non-critical field invalid in response ;CM-MAC=
1970-01-01 00:00:24 3-Critical R002.0 No Ranging Response received - T3 time-out
1970-01-01 00:00:21 3-Critical U002.0 UCD invalid or channel unusable
1970-01-01 00:00:12 3-Critical R002.0 No Ranging Response received - T3 time-out
1970-01-01 00:00:11 3-Critical U002.0 UCD invalid or channel unusable
1970-01-01 00:00:08 3-Critical T001.0 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
1970-01-01 00:00:08 6-Notice M571.1 Ethernet link up - ready to pass packets
2014-08-13 20:09:04 6-Notice M573.0 Modem Is Shutting Down and Rebooting...
2014-08-13 20:09:04 3-Critical R004.0 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance o
2014-08-13 20:08:40 4-Error C401.0 DCC-ACK not received
2014-08-13 19:39:21 6-Notice I401.0 TLV-11 - unrecognized OID
1970-01-01 00:00:35 5-Warning D003.0 DHCP WARNING - Non-critical field invalid in response ;CM-MAC=
1970-01-01 00:00:21 3-Critical R002.0 No Ranging Response received - T3 time-out
1970-01-01 00:00:20 3-Critical U002.0 UCD invalid or channel unusable
1970-01-01 00:00:16 3-Critical R002.0 No Ranging Response received - T3 time-out
1970-01-01 00:00:10 3-Critical U002.0 UCD invalid or channel unusable
1970-01-01 00:00:08 3-Critical T001.0 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
1970-01-01 00:00:08 6-Notice M571.1 Ethernet link up - ready to pass packets
2014-08-13 19:38:32 6-Notice M573.0 Modem Is Shutting Down and Rebooting...
2014-08-13 19:38:32 3-Critical R004.0 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance o
2014-08-13 19:38:09 4-Error C401.0 DCC-ACK not received
2014-08-13 17:08:05 6-Notice I401.0 TLV-11 - unrecognized OID
1970-01-01 00:00:33 5-Warning D003.0 DHCP WARNING - Non-critical field invalid in response ;CM-MAC=
1970-01-01 00:00:22 3-Critical R002.0 No Ranging Response received - T3 time-out
1970-01-01 00:00:19 3-Critical U002.0 UCD invalid or channel unusable
1970-01-01 00:00:14 3-Critical R002.0 No Ranging Response received - T3 time-out
1970-01-01 00:00:11 3-Critical U002.0 UCD invalid or channel unusable
1970-01-01 00:00:08 3-Critical T001.0 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
1970-01-01 00:00:08 6-Notice M571.1 Ethernet link up - ready to pass packets
2014-08-13 17:07:18 6-Notice M573.0 Modem Is Shutting Down and Rebooting...
2014-08-13 17:07:18 3-Critical R004.0 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance o
2014-08-13 17:06:55 4-Error C401.0 DCC-ACK not received
2014-08-13 15:07:26 6-Notice I401.0 TLV-11 - unrecognized OID
1970-01-01 00:00:35 5-Warning D003.0 DHCP WARNING - Non-critical field invalid in response ;CM-MAC=
1970-01-01 00:00:22 3-Critical R002.0 No Ranging Response received - T3 time-out
1970-01-01 00:00:19 3-Critical U002.0 UCD invalid or channel unusable
1970-01-01 00:00:14 3-Critical R002.0 No Ranging Response received - T3 time-out
1970-01-01 00:00:11 3-Critical U002.0 UCD invalid or channel unusable
1970-01-01 00:00:08 3-Critical T001.0 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
1970-01-01 00:00:08 6-Notice M571.1 Ethernet link up - ready to pass packets
2014-08-13 15:06:36 6-Notice M573.0 Modem Is Shutting Down and Rebooting...
2014-08-13 15:06:36 3-Critical R004.0 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance o
2014-08-13 15:06:13 4-Error C401.0 DCC-ACK not received
2014-08-13 14:37:24 6-Notice I401.0 TLV-11 - unrecognized OID
1970-01-01 00:00:39 5-Warning D003.0 DHCP WARNING - Non-critical field invalid in response ;CM-MAC=
1970-01-01 00:00:24 3-Critical R002.0 No Ranging Response received - T3 time-out
1970-01-01 00:00:22 3-Critical U002.0 UCD invalid or channel unusable
1970-01-01 00:00:13 3-Critical R002.0 No Ranging Response received - T3 time-out
1970-01-01 00:00:11 3-Critical U002.0 UCD invalid or channel unusable
1970-01-01 00:00:08 3-Critical T001.0 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
1970-01-01 00:00:08 6-Notice M571.1 Ethernet link up - ready to pass packets
2014-08-13 14:36:30 6-Notice M573.0 Modem Is Shutting Down and Rebooting...
2014-08-13 14:36:30 3-Critical R004.0 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance o
2014-08-13 14:36:07 4-Error C401.0 DCC-ACK not received
2014-08-13 13:37:10 6-Notice I401.0 TLV-11 - unrecognized OID
1970-01-01 00:00:37 5-Warning D003.0 DHCP WARNING - Non-critical field invalid in response ;CM-MAC=
1970-01-01 00:00:28 3-Critical R002.0 No Ranging Response received - T3 time-out
1970-01-01 00:00:25 3-Critical U002.0 UCD invalid or channel unusable
1970-01-01 00:00:17 3-Critical R002.0 No Ranging Response received - T3 time-out
1970-01-01 00:00:09 3-Critical U002.0 UCD invalid or channel unusable
1970-01-01 00:00:08 3-Critical T001.0 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
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