Constant T3 Timeouts Causing Frequent Outages - Need Plant Technician

I've been experiencing daily internet outages for several months. The outages occur at various times (often early morning) and do not resolve on their own - I must manually reset the modem each time to restore connectivity. Despite 5 technician visits, replacing all customer equipment, the coax cable into my unit, the problem persists. My modem logs and signal levels indicate an upstream signal path issue between my location and your neighborhood node that requires infrastructure repair.

Technical Evidence:

Modem 1 (Arris Surfboard S34):

• Upstream power: 53.3-54.5 dBmV (above 51 dBmV maximum)
• Error logs show: "RNG-RSP CCAP Commanded Power Exceeds Value" and "RNG-RSP CCAP Commanded Power in Excess of 6 dB Below"
• Continuous "SYNC Timing Synchronization failure - Loss of Sync"
• "No Ranging Response received - T3 time-out" errors
• Connection only restores after manual modem reset

Modem 2 (older model):

• Upstream power: 42.0-44.3 dBmV (within range but high)
• Identical error patterns: T3 timeouts, ranging failures
• "16 consecutive T3 timeouts while trying to range" on multiple upstream channels
• "Unicast Maintenance Ranging attempted - No response - Retries exhausted"
• Same behavior - requires manual reset to restore connection

What I've Eliminated:

• ✅ Two different modems (both show identical issues)
• ✅ Two different electrical outlets
• ✅ New coax cable from building box to apartment
• ✅ All connections tightened at building box and wall outlet

Technician Visit History:

1. Visit 1: Tightened loose cables at building box - issue persisted
2. Visit 2: Found no immediate problem, mentioned possible neighborhood signal issue, said he'd note it for tech team - issue persisted
3. Visit 3: Correctly diagnosed upload signal power too high at building box level, said another tech would come to adjust it - this adjustment was never completed
4. Visit 4: Replaced coax cable from building box to apartment, tightened wall connection - issue persisted

The Problem: Two completely different modems showing identical upstream communication failures proves this is an infrastructure issue, not customer equipment. The third technician correctly identified the root cause as upload signal power needing adjustment at your infrastructure equipment, but that work was never completed. The fact that both modems require manual resets and never recover on their own indicates the modems are losing upstream communication and cannot re-establish it without intervention.

What I Need: I need a plant/line technician dispatched to adjust signal levels at the neighborhood node equipment. The upstream signal path between my location and your node is clearly degraded. In-home technicians have already addressed every possible customer premises issue. This requires infrastructure-level repair.

Current Status: This issue happens daily and has been ongoing for months. Each outage requires me to manually reset the modem to restore service.

I have full modem logs, signal level screenshots, and detailed documentation available if needed. Please escalate this to someone who can dispatch the appropriate technician to fix the neighborhood infrastructure issue.

Please send help, I'm at my wits end!