Hi Kev, thanks for the replies.
New Zealand operates quite similarly to Europe except we only have 12 transponders on Optus D1 that are pointed in NZ's general direction and so we only need a single LOF for the LNB rather than the 22Khz switch on the universal to receive all channels. All of NZs channels are on the horizontal polarity and do not require switching to the vertical polarity. Only tuner 1 is connected with the other 3 disabled in TVH, same as your suggestion.
To give some cable context the whole system is setup as follows:
Quad 10750Mhz LNB (single LOF) > Output 1 > Sky NZ official STB
> Output 2 > 2 input (H/V) 4 output passive Diseqc compatible switch (proper switch and not just a splitter) > Dell R310, dual
TBS 6981 cards
> Output 3 > direct connection to Input 1 of the Triax TSS400
> Output 4 > No connection, not cabled.
So the issues
1) The LNB not being powered when either the STB or the Dell is switch off is an issue.. If that is down to the lack of voltage out of one of the tuners, that could obviously be an issue. Is there a simple way to check the voltage being sent?
2) Scanning of transponders is poor and doesn't complete on all of them, perhaps that could be linked to 1) above the passive switch is making it worse? Would a powered switch help here? I'll try entering transponder details manually in to TVH and see if that helps.
3) Quattro vs Quad - We don't use quattro here, as effectively each output is V/H compatible and we only have a single LOF. The Triax is set to Quad in the settings so unless there are some issues with the quad side I'm not sure if Voltage is an issue.
4) Errors - So when the triax does work, TVH produces endless amounts of continuity errors, in the 10,000s on scanning. This is clearly a tuner issue as the Dell with its PCIe cards is rock solid and doesn't have any problems.
I haven't gone live with my system yet as I'm waiting for my Mi Box Android TV unit to arrive to replace my cumbersome HTPC... Triax themselves are not even answering my email questions regarding the unit and the supplier doesn't have a clue... I can't really sent it back as shipping is expensive from NZ and it does actually work, I just can't sort out the connections correctly.
Anyway, thank you for the thoughts, any views on what I've written is appreciated.