BIZZARE "TWIN LNB"

HAZEMAN · 06-08-2017 07:38PM #1

I have a problem with satellite TV.

I have an 80cm dish connected to a receiver using a twin LNB to get the German channels. It has been working fine for number of years until recently it stopped displaying the message “No Signal”
1. To trouble shoot I checked all connections – still not working
2. I realigned the dish – still not working
3. I bought a new twin LNB – still not working
4. I got 2nd receiver and 2nd TV and connected it to spare port on the new LNB – both TVs working (thought I had the problem solved)
5. When I disconnect the 2nd TV & receiver the no signal reappears on Main TV despite it being a separate connection
6. The main TV will only work if the cable from the other port on the LNB is connected to the second the 2nd TV – I know it sounds bizzare but I have tried everything to find the reason.
So much so that right now the main TV is working – but only because I have a cable from the second LNB port touching the 2nd TV (and I mean just touching - one of the components at the back) – also this 2nd TV is unplugged –
I AM GOING CRAZY
IS THE PLACE HAUNTED?
ANY HELP/ADVICE APPRECIATED

HAZEMAN · 06-08-2017 08:25PM

Thank you sugarman,

Up the ladder now so.........

HAZEMAN · 06-08-2017 08:52PM

Just back from following your advice,
trimmed back all connections and still the same problem.

Both TVs are working - but I just want the main TV to work on its own.
When I disconnect the temporary set up the main TV will not work. The Main TV will only work if the cable I connected to the second LNB port is touching off the temporary TV.

THIS IS WRECKING MY HEAD____________LOSING IT NOW!!!!!!!!!!!!!!

Thurston? · 06-08-2017 09:41PM

HAZEMAN wrote: »

... right now the main TV is working – but only because I have a cable from the second LNB port touching the 2nd TV (and I mean just touching - one of the components at the back) – also this 2nd TV is unplugged

The 2nd TV is plugged out but, what about the 2nd satellite receiver? And is it still connected to the TV?

Johnboy1951 · 06-08-2017 09:45PM

Maybe the LNB is not being powered without the second connector ....... a break in the 'ground' connection that is overcome by the second cable?

Thurston? · 06-08-2017 09:49PM

I'd say so, it's why I asked if the 2nd box was still plugged in & connected to the TV.

And also to the OP, I assume it's the outer part of the connector you're touching off the TV?

HAZEMAN · 06-08-2017 10:00PM

Yes you might be on to something - I mistaken said unplugged but should have said powered off with socked switch off

Now - 2nd TV and 2nd receiver both powered off (still plugged in)

I'm currently watching the main TV (ZDF World athletics championship)
The Second temporary set up is powered off but I have the cable from the LNB just touching (not connected properly) to the powered off receiver.
The receiver is still connected to the TV but when I disconnect them signal goes but returns when I touch it off of any port at the back of the powered off TV
Now when I unplug the powered off TV the main TV loses signal

Is it got to do with Earthing or something???

Thurston? · 06-08-2017 10:05PM

The outer conductor (braid) on the 1st cable must be broken somewhere.

I'd just swap the 2nd cable over.

HAZEMAN · 06-08-2017 10:17PM

That must be it. I can't swap then today as its not long enough.
I will buy new cable.

To sugarman, johnboy1951 & Thurston? I sincerely appreciate your help

Thank you very much

HAZEMAN · 07-08-2017 01:41PM

Using the spare LNB and a cheap Sat finder I sourced the problem to be , not the cable but the coaxial wall socket . An easy fix after all the head scratching...

Thanks again for your help

BIZZARE "TWIN LNB"

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