menuMENU    UK Free TV logo Help!



Click to see updates

What can I do when my Sky Digibox says 'No Signal' or 'Technical fau

What can I do when my Sky Digibox says 'No Signal' or 'Technical fault'?

What can I do when my Sky Digibox says 'No Signal' or &
published on UK Free TV

How to Reset a Sky Digibox when 'No Signal' appears.

Reset method 1 - Delete and Rescan

  1. Turn the power off at the mains socket. Either do this by pulling the plug from the socket, or using a power switch if there is one.

  2. Remove the viewing card from the machine. Using a dry cloth or kitchen roll, clean the gold connector on the reverse of the card. Do not use any cleaning products.

  3. Check cables and connectors are in good order.
  4. Wait for at least 30 seconds.
  5. With the card still out of the machine, plug the Digibox back into the mains.
  6. Ignore all the messages, and wait for around a minute.
  7. Try 101 for BBC One, 102 for BBC Two and 103 for ITV-1.
  8. Insert viewing card, wait a few seconds.
  9. Check 104 for Channel 4 and 105 for five.

Reset Method 2 - Reset the LNB

If the above method does not work, the LNB may have a fault.
  1. Press the [SERVICES] button and then press [4] [0] [1] then [SELECT]

    On Sky HD, press the [SERVICES] button and then press [0] [0] [1] then [SELECT]

    Press the buttons in the sequence above exactly - do not atttempt to use [UP] or [DOWN]. Note that when you press the second 0 and 1 nothing happens on the screen until you press the final [SELECT]. This is a "hidden menu".

  2. Then press [1] to go to the RF output menu.
  3. Press [DOWN] three times to highlight the line 22Khz Command and then press [RIGHT] to change the value to [OFF].
  4. Press [DOWN] and [SELECT] to select Save New Settings.
  5. Press [SKY].
  6. Again press [SERVICES], [4], [0], [1], [SELECT]; then [1] again for the LNB Menu. (SERVICES 0 0 1 SELECT for Sky HD).
  7. Now press the [RED] button (reset all settings), then [DOWN] until you can select Save New Settings again.
  8. Press [SKY].

Reset Method 3 - Upgrade the system software

If there are still problems:

  1. Turn the Digibox off at the mains again and remove the viewing card.
  2. Whilst holding down the BACKUP key on the Digibox - NOT ON THE REMOTE - turn the mains power on.
  3. Keep hold of BACKUP until the screen displays a "UPGRADING SYSTEM SOFTWARE" message – this will be white text on a black screen. On some boxes this can appear as a half screen.

  4. Wait 10 to 20 minutes for the software to download and install. The box will restart when the process is complete.
  5. Ignore all the messages, and wait for around a minute.
  6. Try 101 for BBC One, 102 for BBC Two and 103 for ITV-1.
  7. Insert viewing card, wait a few seconds.
  8. Check 104 for Channel 4 and 105 for five.

All questions
BBC Three Linear channel re-opens1
Removing all barriers to communication between diverse cultures2
How do I get a test card with Freeview3
What can I do when my Sky Digibox says 'No Signal' or 'Technical fau4
Can I receive UK TV in Ghana?5
In this section
Can I use my ex-contract sky digital satellite receiver to get Freeview channels1
Can I stop paying Sky and use my satellite receiver to get Freeview ?2
I have a Panasonic TV with integrated Freeview how can I record Freeview channel3
My Sky box has a "no signal message" - what do I do?4
How do I change the RF output channel on a Sky Digibox?5
I have split the signal from my satellite dish and now nothing works.6

Wednesday, 3 June 2015
7:34 PM

so sorry I need to learn how to spell.

link to this comment
marcsterland's 2 posts GB flag
marcsterland's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
Thursday, 4 June 2015
David Potter
6:05 PM

I have a no signal message on my skyhd box. Have tried rebooting but no success. I have one signal of 95% strength and quality but nothing on the other when both cables are connected. Either input will achieve same result on RHS Input but neither produces a signal on LHS Input so it would seem lnb is OK. Any kideas as to how to proceed please?

link to this comment
David Potter's 5 posts FR flag

11:54 PM

David Potter: Its better to refer to the inputs as being either LNB1 (dish input 1) & LNB2 (dish input 2) rather than RHS & LHS, which is dependant on where you are viewing them from (top or rear).

However, if you are receiving a signal on dish input 1 but not on input 2 (or vice-versa) and swapping the two inputs over does not make any difference to the situation, then this indicates that the boxes number 2 input has failed.

Should by any chance you happen to have access to a simple voltmeter capable of measuring 0 - 20 volts DC, try connecting it (in turn) across the centre pin and screwed thread on each of the two inputs which should give an indication of around 13+volts, if one of them doesn't, then the power supply to same is defective, something which no amount of rebooting / resetting is liable to make any difference to, as LNB power off / on (in the settings menu) affects both tuners at the same time.

That said is based on you "not" having set the box to single input mode.

You should also check the LNB settings using the undermentioned procedure

LNB checking - reset on a Sky HD box.

1:- Press services on your Sky remote control and you will see the main menu with "Options" highlighted.

2:- Highlight the "Settings" menu using the right arrow button and press select.

3:- Press "0 - 1 - Select" to access the Installer setup menu (this menu is not listed on the Settings menu options).

4:- Press Select to see the Setup menu displayed with Hi and Lo band frequencies indicated.

The correct LNB values should read:

LNB Type: Standard
1:- Low Band LO Frequency: 9.75
2:- High Band LO Frequency:10.60
3:- LNB Power Supply: ON
4:- 22 KHz Command: ON
5:- Single feed mode normally off.

Press the red button to reset them to default values even although they may
already be indicating them.

link to this comment
jb38's 7,179 posts GB flag
Friday, 5 June 2015
David Potter
10:54 AM

David Potter: Thank you very much for your reply. I have checked the settings and they are as you say. I have also volt tested both inputs and they both show 13.5 volts. It is input 1 ( my LHS as viewed from the back) which does not give a signal. Can you suggest anything else? Can I use a single input in any way? We are away in France in our caravan for 2 months so you will understand the desperation!!
PS we do not normally have any problem with the system.

link to this comment
David Potter's 5 posts FR flag

5:37 PM

David Potter: As you have now verified that both LNB input sockets on the box are indeed powered, and that the LNB settings match up with the check list and yet no signal is received / indicated on input 1 nomatter which of the two input cables are connected into that input, this then makes your options somewhat limited to carrying out either a "new install", or, the more dastardly "system reset".

The reason for describing the latter as such, is that although it's the most effective way of eliminating any glitches which "may" have developed in the boxes operating system by returning it to its original "out of the box" condition, it does so at the expense of deleting everything stored in the hard drive including your recordings.

Of course in saying that, if a "component" fault has developed in the tuner used by dish input 1 rather than some odd form of glitch, then resetting the box is unlikely to resolve the situation, and so if "new install" does not make any difference to the situation and you have a number of favourite programmes recorded in the hard drive, you will really have to choose if it's worth deleting them in an attempt to overcome the tuner problem.

The only other way of getting over that difficulty being to record programmes stored in the hard drive onto a separate recorder, the snag being that it has to be done in "real time", as there is no way of speeding it up.

link to this comment
jb38's 7,179 posts GB flag
David Potter
7:14 PM

Thanks again. Does not sound good! Sorry to be a pest but do you have the idiots guide to these processes? Might try the reinstall. I see them on the installer set upscreen but I don't suppose it is simply a matter of selecting it on this screen is it? Might doing a software upgrade help.?

link to this comment
David Potter's 5 posts FR flag

8:05 PM

David Potter: Well, it certainly doesn't look too promising, but nothing to worry about regarding the "new install" option, as it "is" simply achieved by selecting and pressing on it then following any instructions that might appear on the screen.

On the subject of a software upgrade, there would be no harm in trying it so long as you didn't attempt to alter anything whilst it was being carried out, as in some cases it can take a considerable time giving the impression that the box has locked up. Undermentioned is a link explaining the procedure dependant on the model being used.

Updating the software on your Sky box - Sky Community

By the way, in your original posting you mentioned having rebooted your box, are you meaning that you disconnected it from the mains after having placed it in standby? should you not have done, then try that as well.

Procedure used to select "new install".

1 : Press "Services" on your Sky remote and you'll see the "Options" menu

2 : Press the right arrow to select "Settings" then press on.

3 : Press (in smooth succession) 0 - 1 - Select then you will see the
set up screen.

4 : Press the right arrows to highlight "Install" which then changes to New
Install when you do this - press "select".

5: Follow the instructions on your TV screen until you see the message
"Installation Complete" is displayed then press select.

link to this comment
jb38's 7,179 posts GB flag
Saturday, 6 June 2015
David Potter
5:38 PM

Have tried all but the System reset with no joy. One final question. Is there a way to use the one good signal I have to use as non plus box/free sat box?.Thank you very much indeed for your help.can

link to this comment
David Potter's 5 posts FR flag

8:33 PM

David Potter: Re: reference to "one good signal", you have to look at it from the point of view that the signal on "both inputs" from the dish must be OK, because if your problem was caused by a fault in the coax (or the LNB port on the dish) feeding into the boxes LNB1, then the signal would have returned when you swapped the boxes two inputs over, the fact that it didn't, indicating that the tuner associated with LNB1's input socket is the reason for your problem.

That said, the thing that still puzzles me about your problem is the fact that any signal at all is being indicated, that is "if" your rebooting exercise involved disconnecting the box from the mains, (which it should have done) the reason for saying that being, LNB1 is the main input on a Sky box, LNB2 being secondary, therefore the box cannot be tuned up unless a signal is being received on LNB1's input, and yet you have reported a signal being indicated on LNB2.

Therefore I would like you to try one final test "without switching the box off". Go into the signal test screen on the box checking that a signal is still being indicated on the LNB2 input, the next stage is to remove the "F" connector on LNB1's input and leave it aside, now unscrew the "F" connector going into the boxes LNB2 and connect it into LNB1 and see if anything is indicated on No1's signal indicator bar.

By the way, signals can on occasions take about 10/15 seconds or so to appear, so don't rush this test.

Regarding a non+ box / Freesat box, Sky (or ex Sky) dishes and leads from are 100% compatible with all Freesat devices, the same rules apply as with Sky+, insomuch that a single lead is only suitable for use with a receiver, whereas a twin tuner Freesat PVR (recorder) requires twin feeds.

link to this comment
jb38's 7,179 posts GB flag
Sunday, 7 June 2015
David Potter
3:47 PM

Hi and thanks again. I have rebooted several times as youdescribe without success and have tried your test . I think both lnb outputs and coax F connectors are OK as either will produce a Signal one on the screen when connected to the LH Side terminal as viewed from the front. If this is your input one then that is consistent and means that input 2 ie the R H Side terminal as viewed from front is perhaps faulty. Hope that is clear now. David

link to this comment
David Potter's 5 posts FR flag
Select more comments

Your comment please
Please post a question, answer or commentUK Free TV is here to help people. If you are rude or disrespectful all of your posts will be deleted and you will be banned.

Privacy policy: UK Free Privacy policy.