TV isn't detected properly with Mini-DVI and composite video

Hi,
Just got a mini-dvi adaptor from Apple, and having trouble getting it working on a CRT TV (have had other windows laptops running s-video out ok on there before via scart and composite)....
I plug it all in, turn on the TV, turn on the macbook, choose 'Detect Displays', and get the secondary display detected as 'Display' rather than TV --> don't get any tv options on the display prefs for that display...
any ideas?
S-Video just gets a blank screen, at least composite video shows a flickering black and white screen (with 5-6 repeated screens squished up).
dodgy mini-dvi cable?? dodgy macbook?? dodgy TV?
thanks
Rach
MacBook ultimate Mac OS X (10.4.8)

Yup - using the same input channel as the playstation/digital tv usually comes in (we only have one 'video in' channel on the tv). Have tried through the scart port (that's how the playstation usually goes in), and the composite port too.
TV is PAL format here i think --- however everywhere I've read, everyone else gets a 'TV' display preference option when it detects it's a TV, and can set the format to PAL/NTSC there. I don't get this as it just thinks it's a display rather than a TV.
Darn, back to the Oxford Circus Apple store for me to see if it's the mini-dvi cable, the macbook or our tv... fighting with all the tourists

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Boece wrote:
!http://images2.monoprice.com/productmediumimages/47241.jpg!
+
!http://images2.monoprice.com/productmediumimages/48501.jpg!
That's the setup I've used. Works great for video and photos, but webpage text can be difficult to read.
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http://discussions.apple.com/thread.jspa?threadID=2430645&tstart=0
Message was edited by: James Press1

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