I think if the "GREEN" light comes on when you press the BLACK button on the antenna panel indicates 12VDC is present.
You may have forgot to lower the antenna on the roof and it lives in a tree limb somewhere along the way now...
If mine ever went bad I think I would get the JACK antenna that does not crank-up just rotates...

The JACK will also mount to your existing crank up mechanics... Installs in a couple of minutes using the same pull-out pins and same RG cable with same Antenna Panel setup... Just screw in the RG cable...

We certainly would not survive very long without our BATWING antenna working... WE use ours at both camping off the power grid and at regular camp sites that has electric and cable hookups. We get 6-36 channels of full blown high def full screen TV signals from the local towns just about everywhere we go here on the East side of the US. Being in the OFF-ROAD POPUP having the live local town radar channel is a big plus for us keeping tabs on the local weather.
Roy Ken