If I only know the receiver, switch, and lnb the technician used and having pcb board of the receiver, switch, and lnb. The receiver pcb board I currently have is closely matching the 3 serial numbers of the 3 receivers I used to have. But the two technicians is not sbca or nec certified. Will it interfere recovering my dish network equipment schematic wise even though there was so signal issue. I also got shocked badly by a connected rg6 connector connected to rg6 coupler without signal interference. I partially know the diagram of the installation. I want to recover my old dish Network Equipment schematic wise and verifying the details if it is correct no matter what the two installers have done in the installation other than what I just said.