Hi again,
I succeeded in eliminating the hum doing this:
I unplugged the AC/DC power supply.
Instead I use the lightning cable output and hooking on USB battery packs.
Thus I get the the DDJ-WEGO3 running without the AC/DC power supply, and thereby I totally got rid of the hum!
However another minor problem arose: Now the iPad 3 is not charged/powered via its 30 pin connector to the DDJ-WEGO3. What could be done? Any ideas?
Is there a connector kit for the iPad 3 that would have a female 30 pin connector (for the cable between the iPad and the DDJ-WEGO3) and a female USB port (to connect to a USB charger)?
Perhaps the battery pack (5 volts) is not enough to both run the DDJ-WEGO3 and charge the iPad? Is it possible to have a battery pack giving 12 volt?
Cheers, Jonas