No sound comes out

Check the connections for all devices. link

Insert connection cables all the way in.

Check that input connectors and output connectors are not reversely connected.

Check cables for damage.

Check that speaker cables are properly connected. Check that cable core wires come in contact with the metal part on speaker terminals. link

Securely tighten the speaker terminals. Check speaker terminals for looseness. link

Check that the proper input source is selected. link

The volume is set to the minimum level. Adjust the volume to a suitable level.link

Cancel the muting mode. link

Check that the correct input source is selected when audio is being input to this unit from an external device. link

Check the digital audio output setting on the connected device. The initial settings may be off depending on the device.

When a headphone plug is inserted into the headphone jack of the unit, no sound is output from the speakers. link