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Sky Digital BSkyB, Freesat & Saorsat support forum
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What's gone wrong?????
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<blockquote data-quote="2old4this" data-source="post: 11324" data-attributes="member: 174998"><p>Get a meter/circuit-tester on the coax between the dish and the receiver, just to make sure that the cable is unbroken. </p><p></p><p>You need to unscrew the coax from the LNB (the device that hangs in front of the dish) and from the back of the digibox, and test the inner core. Use a long piece of wire. Attach it to one end of that inner core. Trail the wire so that its other end is close to the other end of the coax core. Then you can use the circut tester (assuming the test length of wire itself is unbroken).</p><p></p><p>You can then also test the outer earthing sheath on the coax (which connects with the silver outside of the connectors at each end.</p><p></p><p>If you have any other satellite receivers in your house, you can obviously use them to test whether they can pick up a signal from your minisdish/LNB. And if you have any other dishes, the reverse test can be done to test the digibox itself.</p><p></p><p>You can also borrow a friend's digibox and plug your coax into it.</p><p></p><p>You can also check the cable F-connectors (the silver connectors that the coax cable has at each end) - and any intermediate in-line connectors if they were used. If just one tiny strand of the earthing sheath touches the inner core, you lose your signal entirely. So if you had for whatever reason unscrewed such a connector and screwed it back on, that can easily happen. Even if you hadn't, it's worth checking.</p><p></p><p>Check also that no objects are obstructing the dish. A tree, perhaps - or a new shed. And don't forget: because the dish is "offset" (i.e. it's LNB is at the bottom rather than bang in the middle) the dish's line of sight is not what it appears to be. The signal comes in from "above" and is reflected downwards by the dish to the LNB. So the place the signal is coming from (the line along which the dish needs clear sight) is not the place that the dish itself seems to be pointing - it will be some degrees higher.</p><p></p><p>2old</p></blockquote><p></p>
[QUOTE="2old4this, post: 11324, member: 174998"] Get a meter/circuit-tester on the coax between the dish and the receiver, just to make sure that the cable is unbroken. You need to unscrew the coax from the LNB (the device that hangs in front of the dish) and from the back of the digibox, and test the inner core. Use a long piece of wire. Attach it to one end of that inner core. Trail the wire so that its other end is close to the other end of the coax core. Then you can use the circut tester (assuming the test length of wire itself is unbroken). You can then also test the outer earthing sheath on the coax (which connects with the silver outside of the connectors at each end. If you have any other satellite receivers in your house, you can obviously use them to test whether they can pick up a signal from your minisdish/LNB. And if you have any other dishes, the reverse test can be done to test the digibox itself. You can also borrow a friend's digibox and plug your coax into it. You can also check the cable F-connectors (the silver connectors that the coax cable has at each end) - and any intermediate in-line connectors if they were used. If just one tiny strand of the earthing sheath touches the inner core, you lose your signal entirely. So if you had for whatever reason unscrewed such a connector and screwed it back on, that can easily happen. Even if you hadn't, it's worth checking. Check also that no objects are obstructing the dish. A tree, perhaps - or a new shed. And don't forget: because the dish is "offset" (i.e. it's LNB is at the bottom rather than bang in the middle) the dish's line of sight is not what it appears to be. The signal comes in from "above" and is reflected downwards by the dish to the LNB. So the place the signal is coming from (the line along which the dish needs clear sight) is not the place that the dish itself seems to be pointing - it will be some degrees higher. 2old [/QUOTE]
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What's gone wrong?????
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