.. Maybe I need to double check the cable coming from lnb to motor by connecting direct from lnb to receiver.[QUOTE\}
Always a good 1st step, after you have made sure that the motor is aimed a 0.8W
OTOH, many Thor transponders are "quite" strong (especially those with Chinese (CCTV ) channels on them) but both the longitude and elevation settings are rather critical in my limited experience - might be easier to get a signal on a sat that has really strong and not "too fussy" on the longitude setting, even though it's not near 0.8W. Thus I sometimes start as far away as 13E or even Astra 2 on 28E as, then, I can be sure that the LNB->motor>receiver combo is actually "working"!
OTOH2: I'm sure that many more experienced members will have better ideas!