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Changing TV Tuner part in TV Card

Discussion in 'Electronic Repair' started by TuckMeng Lam, Oct 30, 2004.

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  1. TuckMeng Lam

    TuckMeng Lam Guest


    Was dumb enough to buy a PC TV card that does not work with my TV
    system (my TV system in Singapore is PAL B/G and the TV Tuner card
    only does PAL D/K). It seems that only 1 metal box needs to be
    changed. (a rectangular part that is connected to a socket for the
    antenna) Can anyone advise if it's an easy thing to change the card to
    work on PAL B/G by using spare parts from other TV cards? (thinking of
    getting a 2nd hand card just to rip off the TV tuner part).

    Reason why I don't want to replace the card is because the card has
    other features in it (realtime MPEG4 compression etc) that I like.
    Besides, I have limited budget. Only the TV part doesn't work. I get
    TV pictures but static instead of sound.

    Grateful for any good advice. Please email me at tuckmeng at
  2. Si Ballenger

    Si Ballenger Guest

    Get a cheap VCR and connect the composite video and audio from it
    to the inputs on your capture card.
  3. geo73

    geo73 Guest

    I think TV cards can change TV system from NTSC to all PAL versions even to
    SECAM. HAve you checked the programs options?
  4. TuckMeng Lam

    TuckMeng Lam Guest

    No, there are no other options. The card is very specific, only
    receives PAL D/K. Can I hijack another part from a 2nd hand tv card to
    convert it to PAL B/G?
  5. Franc Zabkar

    Franc Zabkar Guest

    Can you open the tuner can? Is the IF stage inside the same can?
    Perhaps if you can identify the chip(s) you could find a datasheet
    with an application circuit that will show you which parts need

    - Franc Zabkar
  6. Craig Hart

    Craig Hart Guest

    Possibly you could. Try to find the datasheet on the current fitted tuner,
    then source a PAL B spare with similar pinout or at leas tthe same set of
    signal in/outs (pinouts seem fairly standardised across models as a broad

    Most times, it's a straight swap plus maybe move a resistor or two on the
    card PCB to "select" the correct mode for the main decoder IC, which may not
    even be necessry for PAL D to PAL B.
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