Got a G703 with scroll wheel issue for 20€ at an auction, I put a piece of paper between the scroll wheel and the encoder. Works like brand new and saved about
Made a g703 scroll wheel out of cork after my original one broke : r/MouseReview
Replacement Parts Mouse Wheel Scroll Board Core Encoder For Logitech G403 G703 - Newegg.com
After hours of surgery I have to say that my scrolling wheel is dead, repose in peace g703 : r/LogitechG