Shaw Direct dsr630 one tuner connected

[bajasat]

Please some advise:

A new customer of mine asked me to check his satellite tv signal because he just moved to another place and in this new place he wasn´t getting some channels that he was getting before.
We went over there,his set up: One 75E dish with 2 630 pvr´s .We checked the dish(a 75E antenna) ,it had a 60 xKU lnb!, we corrected that, realigned it, one of the pvr´s got all the missing channels back, but the other one didn´t, but we noticed that this receiver had only one of the 2 satellite inputs wired and therefore connected, could this be the cause of the missing channels?
How does a pvr operate with only one tuner input connected?
Regards and thanks in advance

 

[bajasat]

Well a couple of fellow installers and Mr.Google just helped me with this :
It seems that the receiver has an option to enable one-tuner operation,moreover I also learned that this missing connection causes the receiver to behave in a wrong way.
Thanks to all the people who read this post.