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Arris SB8200 - "Dynamic Range Window violation" and "SYNC Timing Synchronization failure" errors

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Arris SB8200 - "Dynamic Range Window violation" and "SYNC Timing Synchronization failure" errors

Ever since I upgraded to Gigabit service and got the Arris SB8200 modem, I've been getting the following types of errors along with bad connection speeds:

 

"SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=xxx;CMTS-MAC=xxx;CM-QOS=1.1;CM-VER=3.1;"

"Dynamic Range Window violation"

"RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=xxx;CMTS-MAC=xxx;CM-QOS=1.1;CM-VER=3.1;"

 

Based on what I've been reading, my line is relatively clean and power levels on both Upstream and Downstream channels are within the acceptible range. 

 

What is interesting is that I had a tech out to the house several months ago and he was NOT able to locate my line out at the box at the street.   I didn't think too much about that at the time (the box was a bit of a "rat's nest" so it didn't surprise me).

 

But, now, after reading the incident below, its got me wondering if this might be my problem, too!

 

https://forums.xfinity.com/t5/Your-Home-Network/High-upstream-power-high-uncorrectables-count-Dynami...

"So, "somebody" didn't have enough ports on the tap for the whole section of the planned community in which we live, and decided that a splitter off the tap to feed my line and my neighbors' line was a good idea.   The tech today removed that splitter, and my upstream power is magically better by -3dBmV. No uncorrectables, so far, either."

 

Is there a Comcast tech that monitors these forum that might be able to come out and hunt for my line at the street?

 

@ComcastChe