I don’t understand when you say you say the cd player is producing sound through the speakers. CD players usually don’t make audible noise except music. Sometimes you can hear a disc spinning noise but is if you are physically close to the cd player and not being transmitted to the speakers.
Check both the CD player and remote to see if you have a mute button that may have somehow activated. If that fails see if the DAC has a mute setting. And if all else fails just unplug everything from the electric mainsand then reconnect and try again