Help on Iso xformer and VGA hack

[Ash...Housewares]

Basically, I just don't want to fry my monitor so I'm going to be extra careful.

Below I have attached 3 pictures that explain what I'm hooking up.  I'd like reassurance that I'm doing it right.

Oh, and this is a WG7131 monitor.

Let me know what you think!




On the VGA hack I'm not sure if it would be beneficial (or harmful) to me to hook up the ground on the -sync side to pin 10.  I'm also not positive that I should use the -syncs instead of the +syncs.


-Ash

[menace]

Looks ok--although you should maybe have the case for the isolation transformer on the same ground as what you are calling the outlet ground.

I think the - sync's are what you want to wire for this monitor. You can either twist them together to make a composite sync or wire them individually (depends what wires your cable hack has)  Also the 2nd ground in your picture (pin 10) is a redundant one--you can hook it up as well but its not necessary

[Ash...Housewares]

So I should connect the outlet ground from the monitor to the chassis of the isolation transformer, then connect the chassis of the transformer to the outlet ground?

[AndyWarne]

The metal frame of the monitor should be connected to outlet ground. The two ground pins on the connector are one and the same, they are linked on the PCB so it doesnt really matter which you use. They should be connected to the signal ground of the device driving the monitor (vga card)
It is good practice to ground he transformer case as menace mentioned.