View Full Version : LNB signal issue
Not sure if I can continue on in this discussion. I've a lnb query. My old gigablue box worked on the lnb connection I'm using. Now the zgemma isn't picking up channels. It's direct feed to sky hybrid lnb, model EL02B. Does the zgemma need to power the lnb. There's 4 outputs on the lnb, 2 for sky q, one more is for another tv which I can pick up channel 4 & ITV through old receiver Not sure what the issue is. Maybe disconnect the old receiver, maybe 3 feeds is enough. Don't know. Thanks.
That lnb will own power a skq box from the 2 wideband outputs, so no good for zgemma. Just change the lnb for a quad and you will have 4 or if you fancy a challenge get a unicable lnb. You can get a hybrid with 6 outputs 2 for sky q and 4 for old ie zgemma.
That quad is about £12.00
Ah, I assumed the hybrid sky lnb would work cause it worked on my gigablue. Can you send on link of what to get. Keeping in mind I want to keep sky q etc.
Would getting an ordinary lnb and double lnb bracket, would that work also.
abu baniaz
05-07-23, 11:29
The LNB should still work. However, make sure you only configure/set the tuner with the signal wire.
Ah, I assumed the hybrid sky lnb would work cause it worked on my gigablue. Can you send on link of what to get. Keeping in mind I want to keep sky q etc.
Would getting an ordinary lnb and double lnb bracket, would that work also.
A sky hybrid usually means two wideband outputs for sky Q and two or more legacy outputs.
Enigma boxes do not support the two sky Q outputs but if you have additional legacy outputs those outputs are the same as those from a universal LNB and possibly what is connected to your Gigablue.
As far I'm aware only Sky boxes and a single Freesat box support Sky Q. The technology for Sky Q is basically unique to Sky in the UK (and supported also by 1 Freesat box).
You can get Hybrid Sky Q LNBs with more than two legacy outputs
Example
https://www.world-of-satellite.co.uk/technomate-tm-hybrid-sky-dish-lnb-6-output-2-hybrid-plus-4-universal?search=sky%20q%20lnb
As a test feed the LNB down leads that go into your Gigablue into your Zgemma. You should be able to set up the lnb and get the channels using the same/similar setting you use on your Gigablue.
Are you still keeping your Sky Q box(es)?
Yes keeping sky q. It's basic package but the missus likes it for recording etc. This box is for me. The Zgemma is wired to same cable I had for Gigablue, thus me thining this will also work. If I've to get another lnb then that probably is the answer. That was my first thought but I remember watching world cup on the gigablue.
abu baniaz
05-07-23, 11:53
I forgot to mention, double check that the f-plug did not unscrew from the cable/wire when you removed it from the Gigablue.
As I understand it, the receiver has two satellite tuners. You only have one signal wire. If you configured both tuners, this will cause issues when it tries to use the tuner with no wire.
Cable looks good. It has 3 tuners. 2 Satellite and 1 terrestrial. Terrestrial working.
Set up as this.
Tuner A.
Simple,
Single.
28.3e.
No
No
Tuner B.
Disabled.
Tuner C Terrestrial .
Working.
abu baniaz
05-07-23, 12:26
Try swapping which tuner the signal wire is connected to, just in case mixup between A/B. If that does not work, put the Zgemma into deep standby, then unplug it. Use that same signal wire on the Gigablue and check the Gigablue is working still
I swapped cables in the tuner outlets just in case top was B and bottom was A. Same result. No channels coming through.
Yes keeping sky q. It's basic package but the missus likes it for recording etc. This box is for me. The Zgemma is wired to same cable I had for Gigablue, thus me thining this will also work. If I've to get another lnb then that probably is the answer. That was my first thought but I remember watching world cup on the gigablue.
If the cables worked with the Gigablue the same cables should work with the Zgemma.
You'd think that. Dunno what's going wrong.
That lnb thats linked is perfect, gives you 2 for Sky Q and then 4 legacy, 2 to zgemma, one to gigablue and one to TV and its a good price with sky dish adapter. Make sure you have a HDD or USB for epp in zgemma or you will get problems. The default for epg is internal flash so change that pronto.
You'd think that. Dunno what's going wrong.
Are you configuring the scan using Autobouquetmaker?
menu->setup ->tuners and scanning -> Autobouquetmaker -> Providers -> Freesat UK = yes
set some of the other menu items under Freesat to your region and say yes to create a main bouquet
Press green to save
Then still in the Autobouquetmaker section
Start Scan
Does the box then go away (possibly with the spinning VIX symbol in the corner) and show the number of channels found on Freesat at the top of the screen? This may take a minute or two to finish.
Depending how you use you box it may help if you configure
menu-> setup-> EGP -> Grid EPG -> show Bouquets on launch = yes.
Hi, I'm just doing basic scan under automatic scan. I'm going check the cable in attic tomorrow and bell cable to make sure it's not damaged. Can't think of anything else.
If anyone ie using 2 of of 3 tuners (S & T) , can you send picture of setting. I think mine is correct but no harm in checking.
abu baniaz
05-07-23, 18:47
Simple, single, 28.2 as you described is correct for the tuner connected to universal output of dish pointing to 28.2. Might be better for you to also post your screenshot so someone can double check.
For the Terrestrial one, set it to UK all regions. That is good enough for most people.
Manual scan gives you more control of what you scan instead of automatic. You can even go through the transponders one by one. Can also do that with Signal finder.
Surely it is is easier to recheck the Gigablue instead of going up into loft? When fault finding, you generally start with the last thing that changed. On another forum, somebody went through all the elimination stages, it turned out that the f-plug had worked loose when they swapped receivers.
Went to loft space, out to the dish, belled cable back to room and no breaks. I've a really old octagon going to another room from same dish, different legacy connection that's working. I gave my gigablue away cause didn't think I'd need it. Think I'll try that on the other point.
Does anyone have a zgemma h7s working from Sky legacy connection. Least I know the lnb is suitable.
abu baniaz
07-07-23, 18:58
The universal LNB ports on the Hybrid LNBs are compatible with all Enigma2 receivers. They are just a universal LNB output, please accept this. You don't need someone with the exact same receiver to confirm this. Your Octagon is working off the Legacy ports.
It is possible that an output from the LNB is faulty. Some LNBs have a weird fault, when two tuners are connected to it, they fail on one device. Testing your Zgemma where the Octagon is is a good test. And also testing the Octagon where you are trying to use the Zgemma.
Doing the swap up and yes box is picking up channels. Looks like faulty sky lnb output somewhere. At least the box is working 😂. New lnb should fix it, any one better than the others etc or are they all the same. 2 for sky q and 2 for fta sat boxes. Thanks.
abu baniaz
07-07-23, 21:07
It is a process of elimination. If F-plugs are fine (some people remove and refit to be sure), there is no cable damage, then LNB is likely culprit. Some people would swap ports over on the LNB to rule out the cable (don't use the wideband port).
Do you have only one wire coming to where the Zgemma is going to be? A shotgun cable counts as two.
I'd say lnb is faulty because full scan gave me random channels. Only 47 appeared but none obvious bbc etc. Completely oddball. I'll change ports tomorrow but I'd say it's the lnb.
abu baniaz
07-07-23, 22:00
Forum sponsor sells this: https://www.world-of-satellite.co.uk/technomate-tm-hybrid-sky-dish-lnb-6-output-2-hybrid-plus-4-universal
I'd say lnb is faulty because full scan gave me random channels. Only 47 appeared but none obvious bbc etc. Completely oddball. I'll change ports tomorrow but I'd say it's the lnb.
Or a faulty cable/connection. The box sends control signals up the cable and if one or more of these control signals is not reaching the LBN correctly then you will not get the channels on some transponders.
On the f plug that attaches to your box is the centre pin still straight and sticking out of the end of the plug by maybe 1mm? Is the cable screen/braiding making contact with the outer metal shell of the F connector? Are you sure that you are fully screwing in the f connector to your box. Hand screw it it until tight and then put a pair of pliers on the f connector and gently check that you cannot turn it by more than, say, quarter of a turn.
Is the cable direct from the LNB to your box or does it first go to a face plate?
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