Help Required Some channels/transponders 4.8E (VFilm, Ramasjang) not working

[selec2r]

Hi.

I have tried pretty much everything with a DM800.
My parents can't see all Viasat the channels, like the Vfilm, Ramasjang, Disney Junior.
I have testet with satfinder and when I put in transponder: 11727, H.. it has no signal (Except a few times it had it for seconds).

I have replaced the tuner, replaced LNB and tried with another dreambox with no succes.
When trying the dreambox at my place it works.

Any suggestions? It have 100% signal on most transponders, but around half of the signals are missing from 4.8W.

Any suggestions is highly appreciated.

 

[selec2r]

My parents is 60 cm dish, with posibility for two heads (only on is used and no diseqc), and mine is 45cm with one head.
I have tried aligning the dish a lot of times.

Quick questions:
Can some transponders have 100% and other too weak signal on the same position?
Is the solution to align the dish with manual transponder set to the 11727, H (Transponder for some of the missing channels) ?

thanks so far.

 

[BlindFaith]

I doubt that misalignment is cause. 11727H is stronger than most of the other transponders.

@ selec2r you could try shifting this transponder to the low band. Change the switch frequency from 11700MHz to 11750MHz in the tuner set up.

 

[Analoguesat]

Quick questions:
1)Can some transponders have 100% and other too weak signal on the same position?


2)Is the solution to align the dish with manual transponder set to the 11727, H (Transponder for some of the missing channels) ?

1) Certainly - it all depends on the beam in use, the FEC of the transmitted signal., how well the dish is set up, how sensitive the lnb is, the condition of the cabling, the effectiveness of any switches in circuit, the age of the lnb, and any one of a couple of dozen of other reasons.

2) You need to isolate whats causing the problem.

 

[Mickha]

I would be tempted to look for other reasons, including the possibility of interference, I know some DECT telephones can cause problems, on certain frequencies.

 

[Mickha]

After re-reading your thread, and trying to check the channels, you've mentioned, I find a Disney Junior, and Viasat Film, on 12054 V 27500, DVB-S, and DR Ramasjang on the frequency mentioned, 11727 H 27500, DVB-S.
Are these the frequencies you're experiencing problems with?
If it was a LNB problem I would tend to expect either Vertical, or Horizontal, channels not being scanned in, not both.
When you state that other channels are showing 100% quality, is this using the Dreambox signal meter?
Are you viewing the Viasat Denmark package?

http://www.lyngsat.com/packages/Viasat-Danmark.html

 

[selec2r]

Disney Junior is ok, and two of the Viasat Film channels (cant remember which), the rest of the Viasat Film is not working. The ones i remember is DR Ramasjan and Disney Channel, not working.
Hope this helps.

 

[selec2r]

I doubt that misalignment is cause. 11727H is stronger than most of the other transponders.

@ selec2r you could try shifting this transponder to the low band. Change the switch frequency from 11700MHz to 11750MHz in the tuner set up.

I will give this a try thank you for the test

 

[selec2r]

If it was a LNB problem I would tend to expect either Vertical, or Horizontal, channels not being scanned in, not both.
When you state that other channels are showing 100% quality, is this using the Dreambox signal meter?
Are you viewing the Viasat Denmark package?

http://www.lyngsat.com/packages/Viasat-Danmark.html

I have tried 3 different LNB's - so this should not be causing it.
Yes 100% with dreambox signal meter.
Yes, Viasat Denmark package.

 

[Mickha]

Can you please post a full list of the channels you can't receive, along with their frequencies, polarities, and S/R.
use the lyngsat link for the full channels available on the Viasat Denmark package.
I'm not keen on receivers that indicate 100% signal quality as the readings don't seem to help align a dish correctly, or get the LNB skew correct.

 

[Mickha]

the only problem, with that theory, is that he is using a 45cm dish, and gets all the transponders, whereas his parents, who I assume live near by, aren't getting them on their 60cm dish.
Also, mentioned in the thread, is the fact that these channels are part of the Viasat Denmark package, which I can only see using 2 beams, according to lyngsat, who aren't always right, but they state that they are using the Nordic beam, and the Nordic BSS beam.

http://www.lyngsat-maps.com/footprints/SES-5-Nordic.html

http://www.lyngsat-maps.com/footprints/Astra-4A-Nordic-BSS.html

Of course these maps might not be accurate, but the fact that selec2r can get them on a 45cm dish seems to make them reasonably accurate.

 

[BlindFaith]

That would be indeed impossible with 45 cm, but maybe you should use a different source ;)

 

[archive10]

I have previously received the signals, along with another 50K customers, on a small 45 cm Viasat provided dish, so that's not the problem.
Based on the information provided, I would guess:
1) Damaged dish - verticals vs horizontals.
2) Badly aligned dish / LNB: Verticals vs horizontals.
3) Multi-switch-problems in communal installations.

OP: (@selec2r) - can you post pics of the dish used at your parents'?
Also, can you describe the signal path from Dish to DM?

Also also: Can you describe config of DM, as Viasat only officially works with Viasat boxes, which does not include DM boxes? Are you using a card-sharing device?

 

[selec2r]

OP: (@selec2r) - can you post pics of the dish used at your parents'?
Also, can you describe the signal path from Dish to DM?

Also also: Can you describe config of DM, as Viasat only officially works with Viasat boxes, which does not include DM boxes? Are you using a card-sharing device?

I can take a picture tomorrow, where i will try to use all your good input.
Path: single wire directly from the LNB to the receiver.
DM is standard setup, and works with my dish

 

[selec2r]

Ohh maybe this help to the solution?
I have had it showing the channels for a short while. And after it did show 90% signal for 1 second, and no signal for 10 seconds in satfinder. Jumping back and forth between no signal and ok signal.

It has been working for years, just stopped about a month ago.

If i cant get it to work, i will make a list of channels not working and post them and their frequencies, polarities, and S/R.

Thanks,
Brian

 

[Mickha]

Have your parentsd purchased a new DECT, telephone, in the last month?
When you changed the LNB did you check the cables, for sign of water ingress, or loose connections?
If you have any spare cable try running a new piece, from the LNB to your dreambox.

 

[selec2r]

Hi all.
I would like to say thank you for all your help and input. I finally got it to work.
It turned out to be very low level, since i got it to work after shortening the cable and replacing the LNB to a third LNB.
I dont know which did it, but i'm very happy that it now work again.

Thanks you all.
Brian