Use ChannelStep instead of Next/Previous

Author: elupus

homeassistant/components/philips_js/media_player.py

@@ -167,12 +167,18 @@ async def async_set_volume_level(self, volume: float) -> None:
 
     async def async_media_previous_track(self) -> None:
         """Send rewind command."""
-        await self._tv.sendKey("Previous")
+        if self._tv.channel_active:
+            await self._tv.sendKey("ChannelStepDown")
+        else:
+            await self._tv.sendKey("Previous")
         await self._async_update_soon()
 
     async def async_media_next_track(self) -> None:
         """Send fast forward command."""
-        await self._tv.sendKey("Next")
+        if self._tv.channel_active:
+            await self._tv.sendKey("ChannelStepUp")
+        else:
+            await self._tv.sendKey("Next")
         await self._async_update_soon()
 
     async def async_media_play_pause(self) -> None: