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Thread: NEED HELP wiring custom 8" vga monitor

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    Constant Bitrate sergatiuk's Avatar
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    NEED HELP wiring custom 8" vga monitor

    i have an 8 inch VGA LCD monitor that came out of and old broken CCTV survailance system.
    i was able to determine that it is a VGA monitor, i got some VGA diagrams but i still cannot figure out which wire goes to which pin. please help me figure this out. below are the pictures of the monitor and the citcuit board with the connection. see if you can direct me to which VGA pin goes to which connection on the circuit board.
    Thanks.


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    Bugbyte's Avatar
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    That doesn't appear to be a VGA monitor. I believe that HS and VS refer to horizontal and vertical sync.
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    Constant Bitrate sergatiuk's Avatar
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    bugbyte, you are right about vs and hs. i though the same. based on the letters next to the connectors, its an RBG monitor. based on the amount of pins it also seems like VGA, it is defenatly not LVDS nor DVI.
    also i assume R/R(C) is red, but which is red and which is red ground ?
    same with G or G(Y) for green and B/L for blue ?
    also what VGA pin is CVBS ?
    there are also 2 GN connectors which is assume is ground, but why 2 ?
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    Constant Bitrate
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    Quote Originally Posted by Bugbyte View Post
    That doesn't appear to be a VGA monitor. I believe that HS and VS refer to horizontal and vertical sync.
    Huh? Horizontal and vertical sync are valid VGA signals and RGB completes it. Looks like VGA to me.

    The Y and C probably refer to Luminance and Chroma (eg. it's able to do YUV as well as RGB)

    CVBS would be Color, Video, Blank and Sync, commonly known as composite video.

    Looks like a multiple input format LCD controller. Do we have a model number for either the LCD panel or the controller?

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    Constant Bitrate sergatiuk's Avatar
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    Quote Originally Posted by Sicarius View Post
    Huh? Horizontal and vertical sync are valid VGA signals and RGB completes it. Looks like VGA to me.

    The Y and C probably refer to Luminance and Chroma (eg. it's able to do YUV as well as RGB)

    CVBS would be Color, Video, Blank and Sync, commonly known as composite video.

    Looks like a multiple input format LCD controller. Do we have a model number for either the LCD panel or the controller?
    multi-format...thats excellent, even better (;

    the controller model is: LV-80R01
    the LCD is: AT080TN43

    i would really appreciate if you can direct me to which pin should go to which connection (;
    thanks in advance.
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    Constant Bitrate sergatiuk's Avatar
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    Quote Originally Posted by tom04841 View Post
    before i made the post here, i tried searching goodle for docs on this LCD or the controller board. i have ran across this document and many others, but nothing that i found was detailed enough to get the info i need... that is why i am asking the experts here.
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    Constant Bitrate sergatiuk's Avatar
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    can the ground for red, green, blue be a single wire ?
    or they must be 3 separate ones ?
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    Constant Bitrate sergatiuk's Avatar
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    Sicarius, now that i think about it and look at the connections again. (correct me if i am wrong)
    CVBS is composite video, the GN following it is the composite ground.
    B, G, R are blue, green, red, the GN following is the RBG ground.
    VS, HS are verical sync and horizontal sync.

    what do you think are the 3 connectors on the 2nd picture ? (R,G,L)
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    The R, G, L looks like a two position jumper.

    This is pure speculation but it could be either R(right?) or L(left?) connected to ground for horizontal flip?

    The document above shows audio so it could also be that (in or out, I don't know).

    Further checking shows that Y and C could also be for S-Video.

    As for pinouts, my best guess would be that you could connect R, G, B, HS, & VS to their standard location on a VGA connector using the GN under R as a common ground.

    My question, at this point, is how do you perform input selection?

    Also, could you check the circuit board for a different model #. The one you gave is only bringing up entries for the entire monitor.

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