no signal through diseqc motor with 5620

  • hello
    i am using a dreambox 5620 but i cannot get a signal through my diseqc motor.if i have a direct connection to lnb,bypassing the motor,reciever gets signal fine.but i cannot get a signal through the motor.the motor connections are fine as i have a 7000s running fine through it.i am using superjack dg120 diseqc motor.i tried a friends stab diseqc motor,but would not work either.i sent my 5620 for boot repair last year and reported diseqc motor problem,but they did not repair it.i tried all of your 5620 images,but no luck.any ideas of how i can fix it?
    cheers
    mayto