If the light comes through the film gate when
camera lid is open,it passes the light test.
to make sure the film passes trough the camera,
you should check and see if the sprocket is
moving back and forth, nexted to the gate.
if you are able to control the light coming through the gate by moving the F-stop on the lens,with the lid open.....and,if the motor drive
which pushes the film through the cart.,
is spinning in a small circuler motion,
it is the film,
and if it is, then count yourself lucky.
Repairs would be too much.
camerakid629,