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Critical Events in CM600 Event Log. What do they mean?
My XFINITY internet service has been dropping several times a day and then automatically recovers within 2 minutes. XFINITY keeps saying I need new cable modem. Bought new CM2000 and XFINITY bricked it (corrupted firmware) while trying to activate it. So I am back to my old CM600 waiting for replacement CM2000. Anyway. Checked the Event log on my old CM600 put back online and found several critical events. Are these ISP issues or CM600 malfunction? Would like to clear problem before XFINITY tries to activate new replacement CM2000.
SYNC Timing Synchronization failure - Failed to acquire FEC framing
Started Unicast Maintenance Ranging - No Response Received - T3 Time-out
What other information would be helpful from event log to discover cause of the seemingly random internet service drops?
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| System Up Time: 27:49:19 |
3 Replies
Also, SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
Those tend to indicate line issues.
And you have errors in the line.
Start with removing any amplifiers, signal attenuators, or splitters from the coax.
From there check the line for kinks, damage, moisture in the line.
Check the connectors for improperly made ends, foil touching the copper coax line, loose connections, bad/old/cheap connectors, or corroded connections. Replace them if you do.
If you can, simply connect the modem right where the coax comes into the home. This prevents wiring in the home from being the issue. And some ISP’s charge if the wiring issue is in the home. So this helps prevent this.- The coax has always been direct to modem from feed into house. No splitters or amplifiers ever on line. I have kinkless ethernet cables between modem & router and router & desktop. So should suspect outdoor coax issue? I did have new HVAC installed March 30 and notice orange cable on top of ground with lots if rain. Perhaps cable disturbed and now wet. Will schedule XFINITY tech to come check line.
