Audio problem while capturing from VHS

[Eastclif]

Hello, 

I've been converting segments of old VHS tapes to MP4 files, quite successfully.  My problem is that while I'm recording, there is no audio, but the file that is saved to MP4 has the audio and it's just fine.  I've looked at settings, and can't find anything that helps. 

Any / all advice / suggestions appreciated. 

This is my set up

VHS RCA cables connected to - 'MINI AV@HDMI upscaler 1080p' connected by HDMI to '4K ultra HD video capture' card connected to  USB 3 on Windows 10 laptop with NCH Video Pad v 13.80 (I think)

Thank you 

[borate]

Right-click the speaker icon at the bottom-right of the screen and choose Volume Mixer.  If there's a slider for your capture card, move it to the far right.

Report back.

[Eastclif]

Hi, thanks. 
All are at max  volume: 
Samsung TV
System (Windows) sounds
Chrome
iTunes
VideoPad

I've looked at my choices of sound source in the Video Pad recording window. The one being used is the USB interface, same as the video. Should I be able to find a volume slider for that somewhere.

[borate]

The only other item that comes to mind is a right-click on the icon, then choose Sounds.

Right-click the USB input item, if it exists, then click Properties.  Click the Levels tab.

Check the Listen to this Device box, if available.  This option may apply only to the mic input.

[Eastclif]

Yes !!!  I found the Listen to this device box. Thanks so much !!!!