diff --git a/homeassistant/components/sonos/media_player.py b/homeassistant/components/sonos/media_player.py
index 681a5f1c9e2..e30dff2edc5 100644
--- a/homeassistant/components/sonos/media_player.py
+++ b/homeassistant/components/sonos/media_player.py
@@ -77,6 +77,7 @@ async def async_setup_entry(hass, config_entry, async_add_entities):
         hass.data[DATA_SONOS] = SonosData(hass)
 
     config = hass.data[SONOS_DOMAIN].get('media_player', {})
+    _LOGGER.debug("async_setup_entry, config=%s", config)
 
     advertise_addr = config.get(CONF_ADVERTISE_ADDR)
     if advertise_addr:
@@ -89,35 +90,43 @@ async def async_setup_entry(hass, config_entry, async_add_entities):
         def _discovered_player(soco):
             """Handle a (re)discovered player."""
             try:
+                _LOGGER.debug("_discovered_player, soco=%s", soco)
                 entity = _get_entity_from_soco_uid(hass, soco.uid)
 
                 if not entity:
+                    _LOGGER.debug("adding new entity")
                     hass.add_job(async_add_entities, [SonosEntity(soco)])
                 else:
+                    _LOGGER.debug("seen %s", entity)
                     hass.add_job(entity.async_seen())
-            except SoCoException:
-                pass
+            except SoCoException as ex:
+                _LOGGER.debug("SoCoException, ex=%s")
 
         if hosts:
             for host in hosts:
                 try:
+                    _LOGGER.debug("testing %s", host)
                     player = pysonos.SoCo(socket.gethostbyname(host))
                     if player.is_visible:
                         # Make sure that the player is available
                         _ = player.volume
 
                         _discovered_player(player)
-                except (OSError, SoCoException):
+                except (OSError, SoCoException) as ex:
+                    _LOGGER.debug("exception %s", ex)
                     if now is None:
                         _LOGGER.warning("Failed to initialize '%s'", host)
 
+            _LOGGER.debug("tested all hosts")
             hass.helpers.event.call_later(DISCOVERY_INTERVAL, _discovery)
         else:
+            _LOGGER.debug("starting discovery thread")
             pysonos.discover_thread(
                 _discovered_player,
                 interval=DISCOVERY_INTERVAL,
                 interface_addr=config.get(CONF_INTERFACE_ADDR))
 
+    _LOGGER.debug("adding discovery job")
     hass.async_add_executor_job(_discovery)
 
     async def async_service_handle(service, data):