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4 posts

Wannabe Geek


Topic # 29445 7-Jan-2009 11:50
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Hi guys,

Having a problem that hopefully someone here can help me with.

A customer has bought a Hills Freeview decoder and is using it on a Dual Throat SKY LNB.  I have adjusted the dish alignment to perfectly centre, and have also adjusted the polarity for the lowest possible vertical signal (using 12456mhz as reference)

The Hills decoder gets no signal at all, nothing, nada.  I put in one of our decoders that we sell (Satmax) and it works perfectly fine, no video/sound distortion etc works perfect.

I have brought the Hills decoder back to work and tested on our dish.  We have a 4 way splitter (all ports power pass) at work and this Hills decoder is working fine!


There has got to be something with the Dual throat LNB that doesn't like this Hills decoder.  This is the second time I'v struck this exact problem, the first time I managed to get around it by literally jamming a standard lnb holder down the Dish's arm and replacing the dual throat LNB with a standard one.  If I do that this time, I'll have to ruin a kit.

Has anyone come across this, does anyone know some sky techs that could shed some light on the problem?  I called Hills and was told there shouldn't be any issues.

Hopefully this is the right place to post.  Any help would be good.

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256 posts

Ultimate Geek
+1 received by user: 3


  Reply # 188018 7-Jan-2009 14:13
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Sounds like the 22Khz switch is on
with a single throat LNB this doesnt matter but with a dual there is a built in 22Khz switch to switch it over to C1/D3




 

1677 posts

Uber Geek
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  Reply # 188025 7-Jan-2009 15:07
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as above, you'll need to make sure you set the 22KHz tone to off, as otherwise you're pointing at Optus C1 (no good for anything much)

 
 
 
 




4 posts

Wannabe Geek


  Reply # 188048 7-Jan-2009 17:33
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thanks for the replies.  I'v also rung Satmax and I'm going to be sent some SKY brackets that will fit the arm, and fit a standard LNB so I think I might end up just replacing the LNB.

I checked the output of the Hills decoder and theres no 22kHZ tone coming out of the decoder, I can only assume that even with a load connected, it wouldn't put out that tone.

I was told to try something else too that will definitly prove the 22kHZ tone theory.  Get a 2 way splitter with a single power pass, connect the satmax decoder and connect the loop out to the Hills.  If both decoders work, then its definitly the 22kHz tone screwing things up.

If the Hills still doesn't work I'm going to put my foot through it.

256 posts

Ultimate Geek
+1 received by user: 3


  Reply # 188101 7-Jan-2009 21:09
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Thats abit extreme
I know its a hills and probably wont last long anyway
But why dont  you just go into the menu and turn the 22Khz to off




 

256 posts

Ultimate Geek
+1 received by user: 3


  Reply # 188103 7-Jan-2009 21:19
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that splitter theory is flawed
22Khz will pass right through it
a 22Khz switch would work




 



4 posts

Wannabe Geek


  Reply # 188118 7-Jan-2009 22:24
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injuised: Thats abit extreme
I know its a hills and probably wont last long anyway
But why dont  you just go into the menu and turn the 22Khz to off


there is no option to turn it off or on that i can see

256 posts

Ultimate Geek
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  Reply # 188242 8-Jan-2009 16:47
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trust me its there
cant remember where , havnt done it for a while
probably under edit satellite or LNB




 

553 posts

Ultimate Geek
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  Reply # 188306 8-Jan-2009 23:04
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The LNB is set to the right type? 



4 posts

Wannabe Geek


  Reply # 188307 8-Jan-2009 23:09
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illicit: The LNB is set to the right type? 


yup

I'm being sent some sky brackets which will fit a standard LNB so im just gonna replace it.  Ill try looking for the 22khz option again but im putting money on it not being there.

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Uber Geek
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  Reply # 188311 8-Jan-2009 23:23
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blindreaper:
illicit: The LNB is set to the right type? 


yup

I'm being sent some sky brackets which will fit a standard LNB so im just gonna replace it.  Ill try looking for the 22khz option again but im putting money on it not being there.


look harder, it's a feature of any DVB-S box to turn this on and off. 

256 posts

Ultimate Geek
+1 received by user: 3


  Reply # 188324 9-Jan-2009 08:11
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Try a factory reset
This will reset all settings to default
which is 22Khz off




 

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