Help with SB101

[Bludragon96]

I'm from mexico and i was using the modem great but since the last month than it only works in the mornings ans the speed is decresing every hour but at 4:00 pm it stop working and only the recive and the power lights are hold and the send light is blinking i don't know what to do a friend sold me the modem and he don't know how to fix it please help this is the event log
Time Priority Code Description
2012-08-19 08:30:11 Critical D003.0 DHCP WARNING - Non-critical field invalid in response.
2012-08-19 08:30:01 Notice M572.0 Rng Rsp Abort Status - Reinitialize MAC...
2012-08-19 08:30:01 Critical R007.0 Unicast Ranging Received Abort Response - Re- initializing MAC
2012-08-19 08:27:35 Critical D003.0 DHCP WARNING - Non-critical field invalid in response.
2012-08-19 08:27:26 Critical R002.0 No Ranging Response received - T3 time-out (US 3)
2012-08-19 08:27:04 Critical T001.0 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
2012-08-19 08:27:03 Critical R007.0 Unicast Ranging Received Abort Response - Re- initializing MAC
2012-08-19 08:26:43 Critical R002.0 No Ranging Response received - T3 time-out (US 2)
2012-08-19 08:26:40 Critical R007.0 Unicast Ranging Received Abort Response - Re- initializing MAC
2012-08-19 08:26:17 Critical R002.0 No Ranging Response received - T3 time-out (US 1)
2012-08-19 08:26:15 Critical R007.0 Unicast Ranging Received Abort Response - Re- initializing MAC
2012-08-19 08:25:54 Critical R002.0 No Ranging Response received - T3 time-out (US 3)
2012-08-19 08:25:51 Critical R007.0 Unicast Ranging Received Abort Response - Re- initializing MAC
2012-08-19 08:25:26 Critical R002.0 No Ranging Response received - T3 time-out (US 4)
2012-08-19 08:25:20 Notice M572.0 Rng Rsp Abort Status - Reinitialize MAC...
2012-08-19 08:25:20 Critical R007.0 Unicast Ranging Received Abort Response - Re- initializing MAC
1970-01-01 00:00:17 Critical D003.0 DHCP WARNING - Non-critical field invalid in response.
1970-01-01 00:00:09 Critical R002.0 No Ranging Response received - T3 time-out (US 4)
1970-01-01 00:00:10 Critical R002.0 No Ranging Response received - T3 time-out (US 3)
1970-01-01 00:07:32 Critical U001.0 No UCD's Received - Timeout
1970-01-01 00:07:21 Critical T001.0 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
1970-01-01 00:07:21 Critical R007.0 Unicast Ranging Received Abort Response - Re- initializing MAC
1970-01-01 00:06:58 Critical R002.0 No Ranging Response received - T3 time-out (US 3)
1970-01-01 00:06:54 Critical R007.0 Unicast Ranging Received Abort Response - Re- initializing MAC
1970-01-01 00:06:21 Critical R002.0 No Ranging Response received - T3 time-out (US 2)
1970-01-01 00:06:17 Critical R007.0 Unicast Ranging Received Abort Response - Re- initializing MAC
1970-01-01 00:05:42 Critical R002.0 No Ranging Response received - T3 time-out (US 1)
1970-01-01 00:05:38 Critical R007.0 Unicast Ranging Received Abort Response - Re- initializing MAC
1970-01-01 00:05:06 Critical R002.0 No Ranging Response received - T3 time-out (US 4)
1970-01-01 00:05:02 Critical T001.0 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
1970-01-01 00:05:01 Critical T002.0 SYNC Timing Synchronization failure - Failed to acquire FEC framing
1970-01-01 00:04:54 Critical T001.0 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
1970-01-01 00:04:54 Critical T002.0 SYNC Timing Synchronization failure - Failed to acquire FEC framing
1970-01-01 00:04:38 Critical T001.0 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
1970-01-01 00:04:38 Critical T002.0 SYNC Timing Synchronization failure - Failed to acquire FEC framing
1970-01-01 00:04:38 Critical T001.0 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
1970-01-01 00:04:37 Critical R007.0 Unicast Ranging Received Abort Response - Re- initializing MAC
1970-01-01 00:04:16 Critical R002.0 No Ranging Response received - T3 time-out (US 3)
1970-01-01 00:04:11 Critical R007.0 Unicast Ranging Received Abort Response - Re- initializing MAC
1970-01-01 00:03:52 Critical R002.0 No Ranging Response received - T3 time-out (US 2)
1970-01-01 00:03:47 Critical R007.0 Unicast Ranging Received Abort Response - Re- initializing MAC
1970-01-01 00:03:15 Critical R002.0 No Ranging Response received - T3 time-out (US 1)
1970-01-01 00:03:10 Critical R007.0 Unicast Ranging Received Abort Response - Re- initializing MAC
1970-01-01 00:02:34 Critical R002.0 No Ranging Response received - T3 time-out (US 4)
1970-01-01 00:02:13 Critical T001.0 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
1970-01-01 00:02:12 Critical R007.0 Unicast Ranging Received Abort Response - Re- initializing MAC
1970-01-01 00:01:35 Critical R002.0 No Ranging Response received - T3 time-out (US 4)
1970-01-01 00:01:30 Critical R007.0 Unicast Ranging Received Abort Response - Re- initializing MAC
1970-01-01 00:01:10 Critical R002.0 No Ranging Response received - T3 time-out (US 3)
1970-01-01 00:01:06 Critical R007.0 Unicast Ranging Received Abort Response - Re- initializing MAC
1970-01-01 00:00:46 Critical R002.0 No Ranging Response received - T3 time-out (US 2)
1970-01-01 00:00:42 Critical R007.0 Unicast Ranging Received Abort Response - Re- initializing MAC
1970-01-01 00:00:09 Critical R002.0 No Ranging Response received - T3 time-out (US 1)
1970-01-01 00:07:23 Critical U001.0 No UCD's Received - Timeout
1970-01-01 00:07:12 Critical T001.0 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
1970-01-01 00:07:11 Critical R007.0 Unicast Ranging Received Abort Response - Re- initializing MAC
1970-01-01 00:06:40 Critical R002.0 No Ranging Response received - T3 time-out (US 4)
1970-01-01 00:06:36 Critical R007.0 Unicast Ranging Received Abort Response - Re- initializing MAC
1970-01-01 00:06:14 Critical R002.0 No Ranging Response received - T3 time-out (US 3)
1970-01-01 00:06:10 Critical R007.0 Unicast Ranging Received Abort Response - Re- initializing MAC
1970-01-01 00:05:39 Critical R002.0 No Ranging Response received - T3 time-out (US 2)
1970-01-01 00:05:37 Critical R007.0 Unicast Ranging Received Abort Response - Re- initializing MAC
1970-01-01 00:05:04 Critical R002.0 No Ranging Response received - T3 time-out (US 1)
1970-01-01 00:04:53 Critical T001.0 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
1970-01-01 00:04:52 Critical T002.0 SYNC Timing Synchronization failure - Failed to acquire FEC framing
1970-01-01 00:04:37 Critical T001.0 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
1970-01-01 00:04:37 Critical T002.0 SYNC Timing Synchronization failure - Failed to acquire FEC framing
1970-01-01 00:04:36 Critical T001.0 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
1970-01-01 00:04:36 Critical R007.0 Unicast Ranging Received Abort Response - Re- initializing MAC
1970-01-01 00:04:04 Critical R002.0 No Ranging Response received - T3 time-out (US 4)
1970-01-01 00:04:01 Critical R007.0 Unicast Ranging Received Abort Response - Re- initializing MAC
1970-01-01 00:03:38 Critical R002.0 No Ranging Response received - T3 time-out (US 3)
1970-01-01 00:03:34 Critical R007.0 Unicast Ranging Received Abort Response - Re- initializing MAC
1970-01-01 00:03:02 Critical R002.0 No Ranging Response received - T3 time-out (US 2)
1970-01-01 00:02:59 Critical R007.0 Unicast Ranging Received Abort Response - Re- initializing MAC
1970-01-01 00:02:33 Critical R002.0 No Ranging Response received - T3 time-out (US 1)
1970-01-01 00:02:11 Critical T001.0 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
1970-01-01 00:02:10 Critical R007.0 Unicast Ranging Received Abort Response - Re- initializing MAC
1970-01-01 00:01:42 Critical R002.0 No Ranging Response received - T3 time-out (US 4)
1970-01-01 00:01:39 Critical R007.0 Unicast Ranging Received Abort Response - Re- initializing MAC
1970-01-01 00:01:19 Critical R002.0 No Ranging Response received - T3 time-out (US 3)
1970-01-01 00:01:14 Critical R007.0 Unicast Ranging Received Abort Response - Re- initializing MAC
1970-01-01 00:00:44 Critical R002.0 No Ranging Response received - T3 time-out (US 2)
1970-01-01 00:00:41 Critical R007.0 Unicast Ranging Received Abort Response - Re- initializing MAC
1970-01-01 00:00:09 Critical R002.0 No Ranging Response received - T3 time-out (US 1)
1970-01-01 00:00:06 Notice M571.1 Ethernet link up - ready to pass packets
1970-01-01 00:00:37 Critical T001.0 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
1970-01-01 00:00:37 Notice M573.0 Modem Is Shutting Down and Rebooting...
1970-01-01 00:00:37 Critical Resetting the cable modem due to docsDevResetNow
1970-01-01 00:00:37 Critical T002.0 SYNC Timing Synchronization failure - Failed to acquire FEC framing
1970-01-01 00:00:05 Critical T001.0 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
1970-01-01 00:00:04 Notice M571.1 Ethernet link up - ready to pass packets

but i don't know how to make an telnet log

[ABMJR]

T3 ( Ranging Request Retries Exhausted )

Explanation: The cable modem has sent 16 Ranging Request (RNG-REQ) messages without receiving a Ranging Response (RNG-RSP) message in reply from the CMTS. The cable modem is therefore resetting its cable interface and restarting the registration process. This typically is caused by noise on the upstream that causes the loss of MAC-layer messages. Noise could also raise the signal-to-noise ratio (SNR) on the upstream to a point where the cable modem’s power level is insufficient to transmit any messages. If the cable modem cannot raise its upstream transmit power level to a level that allows successful communication within the maximum timeout period, it resets its cable interface and restarts the registration process. This error message is DOCSIS event message is R03.0, Ranging Request.

[Bludragon96]

T3 ( Ranging Request Retries Exhausted )

Explanation: The cable modem has sent 16 Ranging Request (RNG-REQ) messages without receiving a Ranging Response (RNG-RSP) message in reply from the CMTS. The cable modem is therefore resetting its cable interface and restarting the registration process. This typically is caused by noise on the upstream that causes the loss of MAC-layer messages. Noise could also raise the signal-to-noise ratio (SNR) on the upstream to a point where the cable modem’s power level is insufficient to transmit any messages. If the cable modem cannot raise its upstream transmit power level to a level that allows successful communication within the maximum timeout period, it resets its cable interface and restarts the registration process. This error message is DOCSIS event message is R03.0, Ranging Request.

and what can i do for fix it ?

[ABMJR]

Thats a service call to your ISP..