Speedometer

["Rick Taylor" <rgt3000@one.net>]

I am in need of the list's help again.

My speedometer decided to die this weekend.  Both odometers still record the
mileage, but the speed part is nicely stationary on 0.  I am driving the car
more now and would like to know how fast I am going.  I am interested in
what could go wrong, and if I need to replace or if it can be repaired.  It
was replaced by the previous owner earlier so the mileage is unimportant.
Can anyone help?

TIA

Rick
TR4A CT57505L