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We had some rain, and sometimes that knocks our signal out...our other two televisions came back on fine, but the third did not. It says "searching for signal" 771, etc. While only receiving a couple of channels. I rebooted several times, even disconnected the satellite in and did a complete reboot. Still nothing. When speaking with a technician on the line, they said there could be water in the line. This I doubt only because we recently had a tropical storm with 10 times more rain than this last event, and everything was fine. Any other suggestions short of calling a technician out?

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If the connection is bad, perhaps you got water into the wall or wherever and it got into that cable only. This would have little effect on the other cables because they are isolated by signal splitters. Tips To Be Secure Whilst Driving At Evening AmanStino

Posted on Dec 27, 2016

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Posted on Dec 27, 2016

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I have to agree with the engineer. From the symptoms you describe, the first thing I would do, is check for water in the cable.

If the cable connection isn't waterproofed at the dish or at any other joins in the cable, water can (and does) get into the cable.

If water gets into the cable, gravity will pull it downwards. The water has nowhere to exit the cable until it reaches the television. Water in the cable will also interfere with the impedance of the cable and cause signal loss.

It's not really about whether it's raining at the time the signal is lost. It's about the amount of time it takes the water in the cable to seep through it.

I suggest you check all external connections on the cable and consider replacing the cable before calling an engineer. If you do replace the cable, be sure to spend the time waterproofing connections to avoid the problem recurring. Replacing a 10 meter length of cable should cost no more than £7 / $10 including new connectors if you do it yourself. Don't buy "low-loss" Co-axial cable though - it's rubbish - buy "Copper Foil Satellite Cable". It's worth extra few cents per metre!


Please rate this solution if you find this helpful. Thanks.

Posted on Oct 16, 2010

  • DILLIGAF
    DILLIGAF Oct 16, 2010

    As you have several televisions, you will have several places where cables are joined/split. However as all televisons have been affected, the source of the problem will most likely be a section of the cable that supplies all 3 - most likely place is the dish.

  • Paul Bade Oct 17, 2010

    Intense rain can obscure a satellite signal while it is falling, especially if water is running heavily on the surface of the dish (alters the signal focus on the LNA pickup). I assumed that is what the writer meant by the signal occasionally being knocked out.

    If there is water inside a coax cable all the way to the receiver end, I would expect some visible sign (corrosion or dampness) when it is removed from the receiver. That would be a quick answer to the question, for as BElectric says, the impedance of the cable is changed, and if corrosion starts inside the cable, the impedance changes even more.

    This cable is probably not directly connected to the satellite antenna, since it is one of several sets in the system. It may in fact be entirely indoors, perhaps connected to a splitter connected to the output of an amplifier or satellite receiver unit, but a building structure problem (flooding or poor runoff drainage, termites, etc.) could be letting water in, either at a connection or someplace where the jacket was damaged.

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Move the problem set to one of the other rooms with a known good connection and test it using that connection (or if that is not practical, bring a known good set into the room with the problem TV and use it to verify the connection is good).

If the connection is bad, perhaps you got water into the wall or wherever and it got into that cable only. This would have little effect on the other cables because they are isolated by signal splitters.

If it is the TV, it is possible its tuner was damaged by lightning. I have seen a set with one part right at the input and another in the power supply blown out, but no damage to anything else in the set or in the building (although it is very uncommon to get off so easily with lightning strikes).

Posted on Oct 16, 2010

  • DILLIGAF
    DILLIGAF Oct 16, 2010

    I wouldn't advise moving a working TV and connecting it to a cable which may be waterlogged. Moving the TV that wont retune to a known working connection should be fine though.

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