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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.


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Comments
Tuesday, 12 February 2013
J
jb38
sentiment_very_satisfiedPlatinum

9:27 PM

Anna: If you are meaning that it only works on one of the feeds, then that can either mean that the LNB port on that feed is defective or that water has possibly entered the "F" connector on the dish end of that feed thats connected to the LNB.

But though as you have mentioned about bending the inner core where it protrudes from the end of the connector that could suggest that the engineer who installed the dish has not cut the protruding end of the coax properly, as it should protrude about 3mm from the end of the connector and with it preferably having been cut at an angle and not straight across.

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jb38's 7,179 posts GB flag
Monday, 18 February 2013
G
Graeme
8:11 PM

I have tried all steps that relate to my problem as best I can; I get a "no signal 28" error message but only on BBC and ch5 if I go to the London ch for BBC1 Sometimes this works. If I am watching TV for more than about 5hrs the signal is weak (ie a broken pixelated picture)then appears to warm up. my setup is an old dish (1 lead) and a HD box, it used to work but this issue is getting worse.

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Graeme's 4 posts GB flag
J
jb38
sentiment_very_satisfiedPlatinum

8:35 PM

Graeme: When you refer to an "HD" box is this a Sky+ HD box or a Freesat one? and if its a Sky+ HD box are you using it in single feed mode?

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jb38's 7,179 posts GB flag
G
Graeme
11:16 PM

Hi, JB38; Yeah its Sky+HD and yes its single feed. the problem appears to get worse over time untill I go thru the steps!?

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Graeme's 4 posts GB flag
Tuesday, 19 February 2013
J
jb38
sentiment_very_satisfiedPlatinum

12:12 AM

Graeme: Thanks for the update, the reason for asking being that although there is always the possibility that your reception problem is being caused by a fault in the boxes power supply, as what you report is a known symptom of this type of fault, however in most cases its due to the signal level received being too low whereby the slightest downward fluctuation in the level received results in partial drop out which triggers the error code mentioned being seen.

You should carry out a signal check using the undermentioned procedure.

If using a Sky+ HD box: (latest menu system)

(1): Press "Services" and you will see the main menu with "Options" being highlighted.

(2): Press the right arrow once to change from Options to "Settings" and press on once highlighted.

(3): Finally, scroll to the right to select and press on "Signal", the grey bars now displayed will show you the strength / quality of the signal.

Any signal level indicated has to around the 55% (or equivalent of) minimum level to resolve a picture and especially where the quality is concerned, because if the quality is observed to be under that of the signal strength then that generally indicates that the dish requires slight re-aligning, this usually (although not always!) being rectified by it being moved the merest fraction either way in its horizontal (right to left) plane.

Maybe you could give an update on the levels found.

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C
Coral Crossley
11:30 AM
Glossop

I don't have a viewing card in my digibox, I have tried unplugging everything, still no joy, could my digibox need renewing ?

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Coral's: mapC's Freeview map terrainC's terrain plot wavesC's frequency data C's Freeview Detailed Coverage
C
Coral Crossley
11:31 AM
Glossop

Aerial to second TV is on roof, fed through to bedroom, plugged into back of TV

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G
Graeme
7:31 PM

thanks for the reply JB38, my signal strengh is about 50% and the quality is lower maybe 35% on a bbc ch (up to 95%strength and 85-90% on ch 4). Allthough this does vary quite a bit depending on what, I'm not sure other than the channel I'm on. Since the update I hve not put the card in, not sure what difference this makes?

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Graeme's 4 posts GB flag
J
jb38
sentiment_very_satisfiedPlatinum

8:31 PM

Graeme: The fact of you managing to achieve a signal level of 95% is a positive indication that your problem is NOT one of dish alignment and so other reasons have to be checked out, that is apart from the actual box being faulty.

The first (and quite common) being that water has entered the "F" connector on the LNB and this is intermittently causing a short circuit to occur resulting in the variable levels you have observed, as the quality should be the same no matter what channel you select as its taken from the default transponder irrespective of what channel you may be on, but though when you select a channel your box sends different voltages as well as a tone up the line and this can vary the intensity of the water induced short circuit.

Anyway I suggest that you carry out the following pre-composed procedure, the "pre" because its a commonly experienced problem.

If water is suspected as having has entered the LNB's "F" connector then it requires the connector to be unscrewed from the LNB on the dish and then further unscrewed from the coax for purposes of drying out with a tissue, then after smearing the inside of the plug with some Vaseline the connector should be screwed back onto the cable again, but "IMPORTANT" before doing so making sure that all strands of the braiding wire that surrounds the coax's middle core wire has been pulled back over the coax's outer cover, then finally screw the connector with cable back onto the LNB.

The connector should then really have a layer of self amalgamating tape wrapped around it for waterproofing purposes, although if the LNB is the more modern type with a pull down shroud that partially covers the connectors it should be OK, although if it is and water has entered the
connector, then that's inclined to indicate that the installation engineer has forgot to pull the shroud down.

If though your problem still exists after having carried out this procedure then its inclined to indicate that the LNB is faulty.

Further info dependant on reply.

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jb38's 7,179 posts GB flag
G
Graeme
9:04 PM

JB38 , Thanks for that will try the steps after work 2moro and keep you posted. Thanks again!

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Graeme's 4 posts GB flag
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