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291 posts

Ultimate Geek
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Topic # 137892 12-Dec-2013 14:59
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Hey there,

I'm more of a software guy and definitely not experienced wish dishes and lnbs etc. My mates freeview box, I've changed the LNB frequency (old sky dish) and upon scanning can get some channels, Mediaworks channels all okay, Parliament TV, but it seems the TVNZ transponder isn't being picked up at all (looked at D1 online and the one with TV1, 2, +1, +2 definately isn't showing up with its channels.

Whats the likely issue? LNB? Dish allignment? Cabling? The box was fine at the last address/dish. Cheers for any thoughts :) 




If you have to run heating in winter, you don’t own enough computers.


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5406 posts

Uber Geek
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  Reply # 951002 12-Dec-2013 15:03
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Could be any of the above.

Do you know what sort of LNB is fitted to the dish? What LNB settings have you entered?



291 posts

Ultimate Geek
+1 received by user: 29


  Reply # 951016 12-Dec-2013 15:21
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RunningMan: Could be any of the above.

Do you know what sort of LNB is fitted to the dish? What LNB settings have you entered?


Bugger, was hoping it would be one thing in particular lol

11300mhz for the LNB settings, and as far as I'm aware its a Sky-installed dish




If you have to run heating in winter, you don’t own enough computers.


 
 
 
 


1945 posts

Uber Geek
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  Reply # 951063 12-Dec-2013 16:15
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Could be the LNB drifting off frquency because its failing. I believe TVNZ mux is quite often the first to be affected. You could try changing the LNB freq in 5mhz increments up or down to see if it comes back. If that works would definitely point to new LNB required.



291 posts

Ultimate Geek
+1 received by user: 29


  Reply # 951066 12-Dec-2013 16:16
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B1GGLZ: Could be the LNB drifting off frquency because its failing. I believe TVNZ mux is quite often the first to be affected. You could try changing the LNB freq in 5mhz increments up or down to see if it comes back. If that works would definitely point to new LNB required.


Cheers, will try head down tonight to his and have a play.




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  Reply # 951070 12-Dec-2013 16:27
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The other possibility is the skew (rotation) being out slightly on the LNB - a couple of mm out and it can start dropping some transponders.

Might be best to start from the beginning though, and have a quick look at the LNB from ground level, just to check you have the correct LO frequency for it.

Then make sure the STB settings match the LNB.

Next step would be confirming correct dish alignment and LNB slew - fairly easy to DIY just by moving the dish a couple of mm at a time and watching the signal strength on the STB.

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