Hi,
I need to solder a DB15 (3*5) connector on the VGA cable coming out of my Proview CRT monitor. Problem I see 3 big wires (RED, GREY, BLUE) and 6 small ones (orange, yellow, brown, green, white & black).
First, I know that RED must be connected to PIN n°1, GREY to 2, BLUE to 3 but I don't know what to do for the GND of these 3 colors as all GND wires are intermingled.
Second, I don't know where to solder the 6 thin wires and in which order!

I have to tell that I cannot access either to the female connector inside the HMC or to the other side of the VGA cable inside the monitor.

Please help me!!

Hi the gnd of the red grey and blue are directly below.

red outer = 6
green outer = 7
blue outer = 8

the other colours you reqire a minimum of 3 more to get the monitor to work;

H-sync
V-sync
digital gnd

you should be able to find the gnd by meauring the resistance from 1 of the 6 small wires to the outer of one of the thick wires.

If you gave us the model number you may be lucky and one of us may have the schematics with the connections shown.

Rich

Thanks for your answer, unfortunately, I cannot access to the other connector of the cable as it's directly connected to the monitor. I still don't understand how to determine which ground is the the red ground, idem for the grey one and the blue one.
I'm waiting for an answer of the Proview Electronics support line but I'm not sure they will give me the scheme of the connections.
So if anyone have plans for my monitor, her is the model number : 998N.
Hope this may help

It's really not that hard.
Richard told you where these ground wires go so that should be clear by now.
Further, most of these grounds actually are connected to each other and you can connect them all together.
Eventually to one pin of the plug, but i don't know why you would want this as it's harder to do than put each wire to the corresponding pin.

Furthermore, if you google for "vga pinout", you'll find all the info you need for your plug.
You then need to know which wire is meant for which signal.
If you have a multimeter (minimum requirement around here), you can find all GND wires by measuring the resistance to the red, green and blue shields we already identified.
The resistance should be extremely low, as Richard tried to tell you too.
Then these H and V signals.
You might also find some of the remaining wires (let me guess: white and black) to measure an resistance close to 75 Ohms.
These are more than likely your sync wires.

As you can read, i made quite a few assumptions here.
So be carefull and use my remarks as a guide, not as some exact science.