. Basically, there are many different "implementations" of vga cables depending on how "good" the manufacturer is. As you indicated, your samsung will not "see" the cable and as result, will not show the "pc mode" on the vga input and therefore you can't select and connect to the TV (probably displays "no connection" or "check cable"). Anyways, to get the samsung to work, you need the grounds in the cable (there are 5 plus a sheath ground) to be connected together. As you checked (that's good work), on your cable you have only 5 pins connected end to end.... these are 3 colors plus two syncs.... but you probably also have a sheath ground which is connected from the connector casing at each end.... this is the only ground that you actually have in your cable. Not really good, but does work with other monitors (dell for instance) and various computers. To fix your problem, you either need to get another cable with the characteristic grounds as I described or maybe find an extension vga cable (male on one end and female on the other, with grounds as described) that you can plug in between your existing cable and the samsung TV. You can also build your own "doggle" if your electically inclined. I performed "doctor kildare" on my existing cable... tough but it works.
