The First Slip

In IT, a single overlooked detail can cascade into hours of downtime. This page documents the mistake that taught me the true meaning of a checklist.

The Incident

Date: March 14, 2024
Ticket ID: #TN-4092
Issue: "Network connection unstable on Station 4."

I arrived on-site, ran a ping test, and saw 0% packet loss. The connection was stable. I marked the ticket "Resolved" and left. Three hours later, the station went offline again. The issue wasn't the cable or the port—it was a single pin in the termination block that wasn't fully seated.

Ticket #TN-4092 - Status: RESOLVED (INCORRECTLY) Technician: A. Lorch Time Spent: 18 minutes Root Cause: Incorrectly diagnosed as a network issue. Actual Cause: Bad pin in termination block. Cost: 4 hours of downtime, 3 hours of rework.

That mistake cost the client 4 hours of work. It cost me my confidence for a week. But more importantly, it taught me that a passing test doesn't mean a job is done.

The Fix: The Triple-Check Protocol

Since that day, I've built a new standard into my workflow. No ticket is closed until these steps are verified:

Visual Inspection: Every cable, connector, and pin is inspected under light before testing.
Tool Verification: Use a multimeter to test continuity on every pin, not just the main connection.
Stress Test: Run the system under load for at least 15 minutes before marking a ticket as "Resolved."
Peer Review: Ask a colleague to sign off on the work before closing the ticket.

The Lesson

That first slip taught me that speed is the enemy of quality. Every time I touch a cable, I remember that one bad pin. It's the reason my 14-week ledger is so precise.