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Help needed in repairing VGA cable - Page 2

post #11 of 18
Thread Starter 
Found something, The wire to pin number 1, i.e Red seemed a bit cracked. So, in order to test it, i plucked that wire. But there was no change in the color. So, now it became clear that red had already got cut and it was the one causing the problem. But one problem now is that the broken part of that wire is sitting firmly in that pin's slot and i'm finding it hard to remove that part. Unless I remove it, it'll be impossible to connect red wire back. So, any suggestions on removing it?
BTW, had forgotten to add this. Just before i broke open the cable, i was getting two types of display. If i didn't touch anything, i used to get the display i've already mentioned about. If i twisted it a bit, i used to get a display which showed green and blue properly but lacked red. So, the problem with red was already there. Now i think green has some problem too. I guess these red and green can be fixed. But I don't know which wire needs to be connected to pin 11. So, please shed some light on that. Thanks.

@razinhail Sure, if this doesn't work out, I'll do it.
Edited by mattjm - 8/9/11 at 10:19pm
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post #12 of 18
Quote:
Originally Posted by mattjm;14522549 
P.S The display is actually like an old Black and White monitor, except that everything is in blue instead of white.

Red and green wires are probably broken.

vga_pinout.jpg
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post #13 of 18
Thread Starter 
Thanks for that. Now it's confirmed that red and green need to be repaired.
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post #14 of 18
Thread Starter 
I opened up the red and green wires and the metal wire inside them had actually got broken. So, I chopped off those parts and tried connecting the unbroken wires with hands and I was able to get proper colours. So, I tried to join the wires using insulation tape. But wasn't able to do so, as it slipped off easily. So, I'm planning to take it to a nearby electronic store to get them soldered. But before that I need to get the details regarding pin 11 and its connection so that I can get them soldered once and for all. So, some description of the connection for pin 11 would really help. Thanks.
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post #15 of 18
Pin 11 doesn't do anything. N/C means not connected.
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post #16 of 18
Thread Starter 
I read it somewhere that in old monitors, it didn't have any connection. But in newer ones it carries some information regarding the monitor. I had also read that if no connection is made, the monitor could be used as a non pnp monitor. The same is happening in my case. The monitor is being shown as Non PnP Monitor and unsupported resolutions are also listed. Also, Pin 11's wire is the only one that is broken apart from red and green. There's some residue of the broken wire's insulator stuck in the pin slot as well. The problem is, I hadn't seen how it was connected. So, I'm finding it difficult to fit it back.
Edited by mattjm - 8/10/11 at 11:11am
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post #17 of 18
Thread Starter 
I tried soldering the pin hole. But it's too tricky and the solders shorted the connections. So, I'm gonna take it to a nearby repairer who replaces the entire cable taken from an old crt. My question is, does a cable from one monitor work in another even though they're different models.
Edited by mattjm - 8/12/11 at 10:02pm
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post #18 of 18
Thread Starter 
Got it working finally. The repair guy had brought a new vga cable which was easy to solder. He soldered it and the good thing was i had copied down the pin layout with wire colours, so the hard task that i did by opening my old cable really helped here tongue.gif. I had asked him to solder a wire onto pin 9, he had done it onto 10 thinking all of them in that row are ground. The monitor was getting detected as generic non pnp. But when he soldered it to 9, it was recognised propely. So, here is the summary of connection in case it might help someone in the future wink.gif. Pins 1,2,3 are RGB. There are wires from monitor to all pins except 6, 7, 8, 10 and 11. 6,7,8,10 are grounds. There's a wire which creates a short from 4 to 11. So basically all the ID bit pins, 4,9,11,12,15 are used in my monitor. I'll try to post a diagram later. Thanks to all who helped me.
Edited by mattjm - 8/13/11 at 10:38pm
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