Is our OM5P-AN radio busted?

[JoelRummel]

One day, our radio worked just fine and was able to communicate with the Driver Station flawlessly.

Now, all of a sudden, it does nothing when we power the robot up. No lights appear on the radio. No signal is emitted.

But we know for sure that voltage is getting through the power cable.

Since buying a new radio is expensive, we'd like to know additional ways to troubleshoot before using up even more of our budget?