It sounds like you're underwatering. Cymbidiums use the leafless bulbs as moisture reserves, so the fact that so many have shrivelled up and gone hollow (i.e. died) indicates that it's seriously dehydrated.
As Bill recommends, water it thoroughly and allow it to dry out before watering again. Depending on your conditions and the media used, this will probably be a few days. Don't be tempted to let it soak in water or overwater it, as this will likely kill the remaining roots.
What media did you use when you repotted it? You mentioned you left space for new "soil" - did you use a potting mix, or Orchid bark? Cymbidiums are semi-epiphytes and cannot survive in dirt/soil/potting mix.
