Logitech G604 LIGHTSPEED Repair

The G604 LIGHTSPEED is a wireless gaming mouse designed for MMO and MOBA players who need many programmable inputs and low-latency performance. It features Logitech’s LIGHTSPEED wireless technology and a high-accuracy HERO sensor for precise tracking, combined with an array of thumb buttons for macro control. The body uses durable plastics with metal components in the scroll wheel and reinforced internal mounts to withstand extended gaming use. Key features include dual-mode wireless (LIGHTSPEED + Bluetooth), long battery life from AA power, and extensive programmable buttons via Logitech software.

The Logitech G604 LIGHTSPEED can be identified by the model number (M/N MR0079). 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-R0079
• Form Factor: Right-handed gaming mouse, ergonomic with dedicated thumb cluster
• Sensor: Logitech HERO optical sensor (HERO 16K) with high-precision tracking
• Maximum DPI: Up to 16,000 DPI (adjustable)
• Connectivity: LIGHTSPEED wireless (proprietary USB receiver) and Bluetooth Low Energy
• Programmable Buttons: Up to 15 programmable buttons (including 6 thumb buttons and primary/secondary buttons)
• Primary Switches: Omron mechanical switches (high-durability, rated ~50M clicks for left/right)
• Power: 2x AA batteries (user-replaceable); long battery life (up to ~240 hours in LIGHTSPEED mode, varies by battery and usage)
• Dimensions & Weight: Approx. 130–136 mm × 77–79 mm × 40–45 mm; weight ~135 g (with batteries - varies by battery used)
• Storage/Receiver: LIGHTSPEED USB receiver (proprietary) stows in the battery compartment

Common repair-relevant faults include button double-clicking (worn microswitches), intermittent wireless connectivity, and failing battery contacts. Diagnose by testing with a fresh battery and alternate receiver/Bluetooth, checking the USB receiver in another port or PC, and opening the mouse to inspect/replace microswitches and battery contact springs.

For additional troubleshooting help, visit: Visit https://support.logi.com for product support, downloads, and contact options (Logitech Support).

Limited hardware warranty varies by region (commonly 1–2 years). Check Logitech support or retailer for exact coverage.

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