Yamaha CVP 501 (brand new) - Noise from the speakers
I just started up my new CPV 501 for the first time and it keeps making a loud noise/hum from the speakers (loudest from the right speaker) until I turn the unit off. The sound is free from noise when listening in headphones or through AUX out. I have eliminated all wireless sources around, so thats not it. And I have no problems whatsoever with any other audio equipment (speakers/digital instruments etc.).
Any idea what it could be?