DDJ-1000: No RCA Output (Master Out 2)

Dear Pioneer community,

I hope you can help with this matter:

I am trying to use RCA as second master out on my DDJ-1000. However, I do not hear any sound, when I connect this output with external speakers or Roland Go:Mixer.

• XLR a master out 1 (connected with XLR monitors) and headphone output work normally.
• Master out 2 worked normally when I was using it multiple times last December. Also just tested the cable with a different device.
• I am using a 3.5mm to 2-male RCA adapter, which has been working fine when I was using it multiple times last December. Since then, the adapter was properly stored in a box.
• There is no (externally visible) damage or whatsoever
• DDJ-1000 is selected as master output in Rekordbox

My settings:

I was thinking what I have changed since December which could be possible causes:

• Updated rekordbox
• Updated DDJ-1000 firmware
• Updated DDJ-1000 driver (uninstall and reinstall)
• Installed SoundFlower and uninstalled it
• Installed Blackhole and uninstalled it
• Installed Jackaudio/Jack2 and uninstalled it

However, I just installed Rekordbox on my work computer and it creates the same result as described above. Also set the Rekordbox settings back to default on my Macbook.

I would be more than happy if you have any thoughts on this and could help me troubleshooting and solving this.

Thank you!

Tobi