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Small green circuit board with scroll wheel encoder and click switch for Logitech G603 mouse

YINGHUA

YINGHUA Mouse Wheel Encoder Board for Logitech G603

SKU CH-6Y36-QMGN3

Replacement encoder wheel board restores scrolling and middle-click function on a Logitech G603 mouse

  • Repair your G603 mouse with a direct-fit encoder board
  • Stable scrolling restored by replacing the faulty wheel encoder
  • Choose Kailh GM 8.0, TTC gold, Kailh red-dot or black-dot micro-switches
  • Single-piece PVC board installs without extra parts
  • Fixes wheel failure or non-turning scroll issues

Compatible Replacement Encoder Board

This replacement encoder board is designed specifically for the Logitech G603 wireless mouse. It restores scroll wheel and middle-click functionality when the original component fails. The board integrates the encoder and micro-switches onto a single PVC assembly. It is intended for users comfortable with soldering or board-level repair.

Suitable for DIY Mouse Repair

This part suits owners of a G603 experiencing scroll skipping or a non-responsive middle button who want to avoid replacing the entire mouse. It requires disassembly and basic soldering skills to install the new board. Buyers who cannot perform component-level repair or who need a plug-and-play solution should seek professional service instead.

Choice of Micro-Switch Variants

The listing offers four distinct micro-switch options: Kailh GM 8.0, TTC dust-proof gold, Kailh red dot, or Kailh black dot. Selecting the correct variant determines the click feel and actuation force of the repaired wheel button. No other specifications differentiate the available versions.

How it compares

Measured against everything we stock in Tech Gadgets & Accessories, at today’s prices. Recalculated every night.

Price $25.99
Typical for this category: the median of 5,998 items is $24.99.

Specifications

No published specifications for this item yet.

Questions about this item

How does the 603 encoder board restore scrolling in my mouse?

It replaces the faulty wheel encoder so the middle-click and scroll functions work again on the Logitech G603.

Which micro-switch options are offered for the 603 board?

Kailh GM 8.0, TTC dust-proof gold, Kailh red dot, or Kailh black dot micro-motion switches.

What physical space does the 603 encoder board need inside the mouse?

The PVC board is a direct drop-in replacement for the original G603 wheel encoder assembly.

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