Faulty speedometer gear in the dash

[Quick]

Hello,

The speedometer needle doesn't correspond to the speed. The tech had the sensor attached to the laptop and checked the speed with his cell phone or something like that.

The input from the sensor seems fine but it's not getting to the speedometer in the dash hence the faulty gear?

Has anyone experienced this and can I take the cluster out and get the gears fixed?

Thanks

 

[Mike6158]

I'm pretty sure that the speedometer doesn't have a gear. The sensor for the gear, that is inside the output shaft of the gearbox, is under car. Wire runs from there to the speedo. Was the "tech" from Best Buy?