Thx for tour advice. At that time, I had kept soldering tip on the pcb so long time about 20 mins for desoldering of switches which may give damage to pcb and result in failure. After this video, I brought new two of logitech mouses. I will try once again if my new one will have same problem :)
you probably broke the circular copper contact while pulling the switches, use leaded tin next time, or chipquik
Thx for tour advice. At that time, I had kept soldering tip on the pcb so long time about 20 mins for desoldering of switches which may give damage to pcb and result in failure. After this video, I brought new two of logitech mouses. I will try once again if my new one will have same problem :)