Phalaenopsis mariae - yellow leaves and new basal growth

[JScott]

The first thing that came to my mind when I saw the picture was "too much light." Do like Roberta said and repot it, then put it somewhere that gets indirect light, or just a little morning sun, or at a window with a sheer curtain to filter the light. It doesn't look at all like it's going to die. If it has good roots and active growth point or points, it can easily recover.