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