I've got four engines, all PS3. Three of the engines work great on wifi with the $4.95 app on my Ipad. One of the engines a PRR diesel from an RTR set work OK, except for one issue. When I shut down the system and then start it back up using the Ipad, this engine has no horn, bell, or engine sounds. If i do an engine reset, all of these sounds come back, until the next time I shut off the main switch. I believe it's a wifi issue because I have no problems when I run the trains with the DCS remote, only with wifi. And the other engines don't seem to have the same problem. Any ideas?
George