Premiere CC HDV audio buzz

So I've been capturing a large batch of miniDV tapes using my old Canon HV20 as the deck, connected to my old tower via firewire 800.

Capturing DV tapes works great, no issues. However, as soon as I switch the capture settings to HDV, there is this horrible buzzing sound that occurs. I've attempted to swap back and forth from DV to HDV and the sound remains, soemtimes quiet, sometimes piercingly loud. I attempted to capture regardless and while the video managed to capture, zero audio appears in the file.

Funny enough, when I switch to DV, I can hear the audio just fine, but a big black screen plays for the video.

Any ideas to what is going on here? I've attempted using multiple firewire cables, cleaning the heads/ports and still the same results. I just want to finish digitizing all of these tapes and this one bug is a giant obstacle in my way. Thanks.