I've read through a lot of the threads here, and have gotten a good idea of what I should be doing from you all 
I bought a HD PVR/SD PVR combo off Bid or Buy to replace a DualView, so most of the cabling was already in place and working. This should be a pretty straight forward install, but I am not getting the heartbeat at all on the SD PVR. The coax carrying the HB has a couple of joints, 2 at wall sockets, and one where I took out a splitter while trying to get the setup going. I have tested this cable with an RF signal from the HD to the SD 2 floors up, and got a good picture on the TV (TV1). But, does a good picture also mean a good HB when the same cable is connected to the PVRs? I have attached a diagram of the layout, after taking all extra TVs and splitters off the line.
My thoughts -
1. MC have not activated the XtraView correctly? I have checked back with them and they say it is activated.
2. Too many joins in the RF/HB cable (3 in all)
3. A tired SD PVR with failed HB circuitry?
I have tried all of combinations of RF IN/RF OUT, remote modes and TV Link on/off. All I get for my troubles is a persistent 'Waiting for Communication from Primary Decoder', and a steady red light on the SD screen. This is how it has been from day one and I am getting tired of running up 2 flights every time I make a change.
Any ideas from what you see here?

I bought a HD PVR/SD PVR combo off Bid or Buy to replace a DualView, so most of the cabling was already in place and working. This should be a pretty straight forward install, but I am not getting the heartbeat at all on the SD PVR. The coax carrying the HB has a couple of joints, 2 at wall sockets, and one where I took out a splitter while trying to get the setup going. I have tested this cable with an RF signal from the HD to the SD 2 floors up, and got a good picture on the TV (TV1). But, does a good picture also mean a good HB when the same cable is connected to the PVRs? I have attached a diagram of the layout, after taking all extra TVs and splitters off the line.
My thoughts -
1. MC have not activated the XtraView correctly? I have checked back with them and they say it is activated.
2. Too many joins in the RF/HB cable (3 in all)
3. A tired SD PVR with failed HB circuitry?
I have tried all of combinations of RF IN/RF OUT, remote modes and TV Link on/off. All I get for my troubles is a persistent 'Waiting for Communication from Primary Decoder', and a steady red light on the SD screen. This is how it has been from day one and I am getting tired of running up 2 flights every time I make a change.
Any ideas from what you see here?
