A while back my Invacom quad started having issues and now has totally failed on one side. Since I have a two-room setup this meant my bedroom was dark. I have several Sadoun dual standard LNBF’s that I purchased a while back and a DMSI dual circular for NASA on 119. I mounted the linear in the center and added the circular off to the side. I drove the dish with the receiver to 123 and powered down the receiver with the switch on the back. The other receiver in the bedroom was unplugged. Using my birddog I verified that the linear was peaked on 123 and the circular was peaked on 119. I hooked the (L) to port 2 and the (C) port 3 of a diseqc switch. It was easier to wire by skipping port 1. Set up both receivers to use the appropriate ports. And then the strangeness started. Both receivers need to be turned on in order to receive signal! Shouldn’t the two outputs of each LNBF be controlled independent of one another? And now the bedroom receiver won’t pick up on the Horizontal side anymore, only Vertical. I verified the voltages coming out of the receiver are 13/18-volt when going from V to H. I checked and rechecked my wiring. Is there a problem with skipping port one on the switch? I’m stumped unless I have a bad LNBF or maybe a switch. The thing that’s really odd is that both receivers need to be on to get signal and then they seem to work fine (except for one receiver losing H.)
Main “control” receiver – Fortec Star Mercury II
Receiver – Motor – switch – Port 2 Linear - Port 3 Circ
Second receiver in bedroom – Fortec Star Lifetime NA
Receiver – switch – Port 2 Linear - Port 3 Circ
Main “control” receiver – Fortec Star Mercury II
Receiver – Motor – switch – Port 2 Linear - Port 3 Circ
Second receiver in bedroom – Fortec Star Lifetime NA
Receiver – switch – Port 2 Linear - Port 3 Circ
