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412 posts

Ultimate Geek
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Topic # 191733 14-Feb-2016 15:52
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A bit of background here...
A few weeks ago everything was going fine, then we had a bit of weather bringing on rain fade,
went to watch tv in the morning no signal??? did a re scan and everything was normal.

 

Now I get no signal scanning finds nothing; however if I do a blind scan all I get is "optus test" @ %76 ?

 

does it sound like the dish has moved off to the wrong sat? or something else...





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1911 posts

Uber Geek
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  Reply # 1492134 14-Feb-2016 17:05
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LNB died?




412 posts

Ultimate Geek
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  Reply # 1492136 14-Feb-2016 17:23
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I was wandering that but I would expect nothing at all ...

 

the optus test channel thing has got me stumped....





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  Reply # 1492204 14-Feb-2016 19:36
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You're probably picking up D3/C1 at 156 degrees. Two possibilities:

 

1) Using a Sky dual throat LNB, you have activated 22kHz signal during the rescan, this will selected the alternate (C1/D3) sat.

 

2) Less likely, but possible you dish has physically moved to the right a few degrees - pretty unlikely, would have to be a good wind and a fairly loose mounting.

 

As for the original rain fade issue, this could be the dish moving out of alignment, but by far the most common reason is the LNB is end of life.




412 posts

Ultimate Geek
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  Reply # 1492306 14-Feb-2016 22:15
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A bit more info for anyone that might be able to work this out

 

I checked the 22khz tone was off and did another blind scan
managed to pick up what looked to be a channel 7(?) feed @ 12634Mhz  H

 

but nothing else

 

 





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  Reply # 1492314 14-Feb-2016 22:57
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Could this be something as simple as a bad connection? Maybe due to moisture getting into the antenna input on the lnb or switch.

 

 





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  Reply # 1492361 15-Feb-2016 06:58
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Can you ID that channel you picked up more precisely?




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Ultimate Geek
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  Reply # 1492390 15-Feb-2016 08:00
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RunningMan:

 

Can you ID that channel you picked up more precisely?

 

 

it goes on/off air when it's not been used and also changes name...

 

currently called "ATN 7news 3"





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  Reply # 1492398 15-Feb-2016 08:45
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That's V polarity, not H. It is on Optus D1 though, so the dish is pointing the right way. Either your receiver is set to output 14v (vertical) rather than 14/18v (V/H), or the LNB is stuffed and won't switch to horizontal polarity.

 

You don't have a splitter with a different sat receiver powering the LNB do you?




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Ultimate Geek
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  Reply # 1492403 15-Feb-2016 08:52
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RunningMan:

 

That's V polarity, not H. It is on Optus D1 though, so the dish is pointing the right way. Either your receiver is set to output 14v (vertical) rather than 14/18v (V/H), or the LNB is stuffed and won't switch to horizontal polarity.

 

You don't have a splitter with a different sat receiver powering the LNB do you?

 

 

no splitter etc other than the one in the LNB

 

 

 

 

guessing that is the block you are referring to however nothing seems to match??

 

12634 H with a SR 7200





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  Reply # 1492405 15-Feb-2016 08:53
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It is possible that the receiver is going bad and not outputting the 18v needed for horizontal, but this would be pretty uncommon.


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