Can I make a vga cord?

You could make one but commercial cords are made so they don't give out loads of RF (radio frequency) mush that can interfere with other devices and services.

specific, yet so can many different issues. while you're conversing with regard to the full demonstrate flickering, that's probably interference. while you're conversing with regard to the full demonstrate having a green or purple or Blue shade to it, then between the indoors wires has broken, or between the pins in a connector has been pushed in. while you're conversing a pair of acceptable photograph different than for one region of the television (possibly a line, or a patch), then that is not any longer the cable, that's the demonstrate screen.

Yes, but probably not cost effectively, and t may be ugly.

You need to get the DE-15 plugs, three appropriated coaxes, shielded lines for the sync, and for the DDI. You cannot use just any wire.