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RFI Interference

  • 09-02-2005 3:55pm
    #1
    mcas
    Closed Accounts Posts: 5 ✭


    I have a sony DVD surround sound system, sony 32'' tv, sky free to view receiver and dvd recorder. I also use one UHF aerial for TV3/TG4 andd one VHF aerial for RTE.

    Powering up the surround sound system (don't have to play a disk) causes interference on both RTE channels only. All other viewing is perfect.

    I have checked leads, screens etc, repositioned aerial and all obvious solutions to no avail.

    Has anyone any suggestions?


Comments

  • #2
    Ulsterman 1690
    Closed Accounts Posts: 1,242 ✭✭✭Ulsterman 1690


    1) take the offending surround sound system back to the shop since its obviously a pile of EMC directive non-compliant crap

    2) Get an outdoor aerial

    3) Wrap a couple of turns of the mains cable of the offending surround sound system around a piece of a ferrite (available in Maplin etc) It MIGHT reduce the interference

    4) Feed the offending surround sound system around from a different mains socket to the TV It MIGHT reduce the interference


  • #3
    Antenna
    Registered Users, Registered Users 2 Posts: 2,399 ✭✭✭Antenna


    You will probably find that your surround sound system also interferes with some FM radio stations on a nearby radio if it is causing hassle with Band 3 TV.

    One thing you could look into is your TV aerial cable (assuming you are not using a settop aerial which would be asking for trouble of this sort) - your aerial cable may be poorly screened - letting in nearby interference. Try replacing it with 'CT100' type cable which has much better screening than the type often found in hardware outlets..


  • #4
    mcas
    Closed Accounts Posts: 5 ✭mcas


    Thanks for the help. I've tried the ferrous coils and have used satellite cable to ensure proper screening.

    I think I'll take the dvd back to the shop but it's out of warrenty so I don't know how I'll get on.

    Would a masthead amplifier on the VHF aerial help?


  • #5
    Ulsterman 1690
    Closed Accounts Posts: 1,242 ✭✭✭Ulsterman 1690


    Unlikely

    It would probably just amplify the interference


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