Hh Mount 12 Usals Diseqc Motor

I have a dm800 original which was working fine with a fortec star motorised dish.This weekend i bought another dm800 which i was goin to put in the spare room.Got the other box this morning and connected it and tested it on astra 28.2e and it moved the satellite position okey.Tried hotbird 13 and it did not move.Connected my old dm800 and it worked for a while but now the motor is stuck.