Good morning
One unit #23 of a six unit lash up quit working. This was a middle engine. Tried to start and run by itself nothing happened ENGINE NOT ON TRACK message, will start up in conventional but no response. I hear a faint double click when power is turned on. Sounds last a long time after power is cut. Now I can not get lash up #6 to come up onto active list. message LASH-UP ENGINE#23 WAS NOT FOUND. The lash up engines will start independently. Anything I can try, before I send in?
Clem k