Sansamp BDDI kicks on, no sound out

Hello! So I recently bought a non-functional bddi on a whim, hoping to fix it. It powers on, and signal makes it out of the parallel output, but nothing from the output or xlr except some general hissing noise, as you tend to get when you crank the level and drive on something.

I'll probably send it out to have it fixed, but I thought I would see if anybody had run into similar issues first that might be on my level to look at.