I have a NEC LCD moniter and i need a vga cable for it. It connects inside the moniter with 28 pin plug. the one i had got broken. the model of the moniter is NEC:700p moniter
i will deeply apreciate your help
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The 9-pin port on your PC tower is NOT a video port, it is a serial data port. All VGA connectors are 15-pin. Hooking up to the 9-pin port will not get you a picture. There should be a VGA port on the PC, or else a DVI an/or HDMI port. You can get DVI-to-VGA adapters that work, but only if the DVI port is an analog DVI, not if it is a digital DVI (DVI-D or DVI-DD).
Unplug power. Unplug VGA cable. Remove back of monitor. (four small Philips headed screws along the bottom rear. Remove screws attaching Monitor to it's base. Carefully, lean the screen away from back of case. Gently unplug 25 pin cable from the screen. Connect AC power. Screen should power on Gray to White. Ble light comes on Blue.Flickers then changes to Amber. Reconnect VGA cable. Monitor should work. Close up the monitor in reverse order to opening it. If these steps don't solve your monitor, consider replacing as cost of repairs may shock you.
pin no 1 - Red colour signal (Red colour wire)
pin no 2 - Green colour signal (Green colour wire)
pin no 3 - Blue colour signal (Blue colour wire)
4&5 Not connected
pin no 6&7&8 are (Grounds)RGB Returns
pin 13 Hohizontal sync signal
pin no 14 vertical sync signal
Not nessasry other pins
Cables do periodically go bad. But If I were you I'd be more worried about a bent/broken pins on the end of the cable. Take a flashlight and shine it on the pins on both end of the cable to see if they have any bent/ broken pins. If you do see a broken pin you will want to check the connectors on both monitors to make sure you don't have a broken connector pin stuck in them. Also If the broken pins are stuck in the monitors I'd reccomend going to an electronics repair shop to have them fix it for a low price, But this is a worst case scenario. I'd bet its just a bad cable, or the cable just went bad.
If you don't see any signs of broken pins, then I'd reccomend getting a new cable and a higher quality/heavier duty one.
If its a "VGA"(analog) cable with blue connectors, I would reccomend upgrading to a HDMI or DV(Digital format) I cable if possible. And if thats not doable and you must use VGA for some reason I'd reccomend getting a heavier duty cable from an online shopping site like newegg.com. I personally just got a Rosewill VGA cable and it works perfectly for me. Just make sure you get the correct female-female connector types and also make sure its the appropriate distance. And remember if your getting a VGA(analog cable) the shorter or less cable you need the better, since analog cables degrade over larger distances.
Most likely it is your VGA cable gone bad. I remember doing a warranty call for HP once, I was the third tech to go out and replace a motherboard. When I got there, I found out that the cable was bad and it was giving everything a blue tint. I would certainly recommend replacing the VGA cable. I bet if you wiggled the VGA (monitor) cable on the back of your computer, it will come and go.