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I am trying to use a Samsung LCD TV Model LE 19R8 as a second PC monitor for my Sony Vaio VGN-Z11WN. With an HP pavilion f1723 monitor connected to the Sony laptop?s VGA port the system works perfectly. When I try to connect to the Samsung TV in place of the HP monitor the Samsung doesn?t appear to ?see? the PC, as the PC connection in the system settings screen of the TV is greyed out. The only difference I can see is that the VGA cable on the HP has 15 pins and the cable I?m using for the Samsung has 14 pins the missing pin is in the middle row, second from the right. Could this be why the Samsung doesn?t ?see? the PC? What is the function of the missing pin? I have used the 14 pin cable with other PCs and monitors successfully. Before I buy a 15 pin male to male cable I would like to know if you think this will solve the problem>

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  • guthriegus May 01, 2010

    Many thanks Halbrook, I'll purchase a 15 pin VGA cable right away, in the meantime I have another question as follows: -






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    Further to the question about connecting a Sony Vaio to a
    Samsung LCD TV I posted a few minutes ago, I have a further question.


    Rather than use the VGA ports on the laptop and TV, could I
    use the HDMI ports? If that is possible what settings must I use on the laptop
    to send the screen signal to the TV via the HDMI port and cable?




  • guthriegus May 01, 2010







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    I don’t know how the pins are numbered, but the top and
    bottom rows each have 5 pins, the middle row has 3 pins, then the missing pin,
    and then one pin, making 4 pins in all. Counting one way it seems to be pin 9
    that is missing, from the other it could be pin 7




  • guthriegus May 01, 2010

    Hello again Halbrook, I have an HDMI cable and will try that solution before buying a new VGA 15 pin cable. will let you know how I get on. The link you provided is very helpful. Thank you

  • guthriegus May 01, 2010

    Very helpful, thank you. I haven't tried it yet as I need to make some purchases in order to try it out, but will come back to you if it doesn't solve the problem.

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This is the PIN assignment of VGA cable:

Pin Signal
1 Red Video
2 Green Video
3 Blue Video
4 Monitor ID - Bit 2
5 Ground
6 Red Ground
7 Green Ground
8 Blue Ground
9 [KEY]
10 Sync Ground
11 Monitor ID - Bit 1
12 Monitor ID - Bit 0
13 Horizontal Sync
14 Vertical Sync
15 N/C (Reserved)

I believed you are missing PIN 8 on your 14pin cable. Without Pin 8, your LCD-TV will not work because the Blue Video color (Pin 3) will not work without the ground (Pin 8). I am very positive that a 15 pin VGA cable will solve your problem.

Posted on May 01, 2010

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