Well, that is hard to understand! The short answer is, "No", the presence or absence of a DP34 should not affect the DPP44 and the receivers directly connected to it. Only the receivers connected through a separator with one coax to the DP34 should be seeing a partial signal loss. I would be suspicious that you've scrambled those cables somehow. Or maybe you left a separator on the end of the wrong cable.
The rule is DishPro Plus switches such as the DPP44 feed dual-tuner receivers via a single coax and a separator. Plain DishPro switches such as the DP34 require a coax to each tuner without a separator.
Was the DPP44 all by itself working OK?
The rule is DishPro Plus switches such as the DPP44 feed dual-tuner receivers via a single coax and a separator. Plain DishPro switches such as the DP34 require a coax to each tuner without a separator.
Was the DPP44 all by itself working OK?