Dying dendrobium - yellowing canes

[jenzed]

Hello orchid medics. I have a Dendrobium Oriental Smile (Orchid of the Week Library: Dendrobium Oriental Smile 'Fantasy' AD/AOS) which I won in a raffle at an orchid show in the spring (which is kinda neat because I'm kinda an orchid newbie).

One cane was dying / dead when I got it (or declined so quickly that it just seemed like it was already dead). Now a second cane has died. The dead canes are yellowy brown and hardish (not especially mushy). The leaves and root clusters on the oldest of the dead cane seems to be doing fine, though.

I moved a couple of months ago, and it is now in a moderately high light spot that is quite cool. It seems like the second cane died quite quickly over the last week - I only noticed it today. I let the plant dry thoroughly between watering. I can't see any bugs. I haven't taken a look at the root ball.

What should I do? Do you think I can save the plant? If the canes are doomed, is there some way I can save the growths off the canes (the root / leaf clusters)?

Thanks for your advice - it's a lovely plant, and I'm sad to be losing it.