Tandy VGM-390 Monitor Special VGA Cable??

[FUNCLE]

I've got a Tandy VGM-390 with a 15 pin connector, but I'm wondering if I need a special VGA cable to make it work properly?

 

[Plasma]

Looks like a normal VGA connector to me.

 

[FUNCLE]

Yes, I'm beginning to believe the monitor is in need of some repair.. huge text and and thin white horizontal lines fill the screen. Thanks!