Reply To: GT250 tachometer not working Jul 18, 2024 at 3:04 AM #14158 DougParticipant Needle moves freely, no return. No obvious burns. I have a soldering iron and can solder. Jul 18, 2024 at 3:04 AM #14158 DougParticipant Needle moves freely, no return. No obvious burns. I have a soldering iron and can solder.