Can anyone help me with my installation i have an explora 1 + explora 2 and dstv model 5s decoders. Signal cables to all decoders comes from smart lnb A,B,C unicable ports and user band settings is correct. I have a comms cable between the 2 exploras with a heartbeat amplifier to 2 additional tv's but the model 5s keeps showing extra view comms error, i understand that i need a diplexer but can someone draw me a simple wiring diagram on the connection to get rid of the error please