Logitech G403 HERO Repair

The G403 HERO is a wired gaming mouse built around Logitech's HERO optical sensor for high-precision tracking and low power usage. It uses durable ABS plastic construction with rubberized side grips and durable mechanical switches designed for long lifecycles. Key features include programmable buttons, LIGHTSYNC RGB lighting, adjustable DPI up to 16,000, and an optional removable 10 g weight for fine-tuning feel. The G403 HERO is commonly used by competitive gamers looking for a balance of performance and comfort.

The Logitech G403 HERO can be identified by the model number (M/N M-U0049). The model label is on the underside of the mouse. This label lists the model (M/N), part (P/N), and serial (S/N) numbers.

• Model Number: M/N: M-U0049
• Sensor: HERO optical sensor (HERO 16K)
• Maximum DPI: 16,000 DPI (software configurable)
• Tracking Speed: Up to 400+ IPS (manufacturer spec for HERO)
• Switches: Omron mechanical switches (rated for ~50M clicks)
• Buttons: 6 programmable buttons (including left/right, scroll click, two side buttons)
• Connectivity: Wired USB-A (gold-plated connector, 1 ms report rate)
• Cable: Flexible rubber cable (non-braided)
• Onboard Memory: Onboard profile storage for DPI, lighting and button assignments
• Weight: Approx. 87 g (includes optional removable 10 g weight)
• Polling Rate: 1000 Hz (1 ms)

Common repair-relevant faults include worn Omron switches (causing double-clicks), cable damage or intermittent USB connection, and scroll wheel encoder failures. Diagnose by testing on multiple USB ports/PCs, inspecting the cable and internal solder joints for breaks, checking button actuation with continuity or software input tools, and replacing faulty switches or encoder assemblies as needed.

For additional troubleshooting help, visit: Visit Logitech Support (https://support.logi.com) and the product support article for the G403 HERO for drivers and help: https://support.logi.com/hc/en-us/articl...

Limited hardware warranty varies by region; check Logitech's warranty information page for terms and to file claims.

• https://support.logi.com/hc/en-us/articl...