How to save a Dendrobium 'Samurai' (Sameri) - partly dying and new growth

[estación seca]

In my opinion a range of 50-70 F / 10-21C is too cool for this sick plant. It's a primary hybrid of Den. antennatum and stratioites, two species from hot and humid tropical lowlands.

Dens go downhill quickly if not watered enough while pushing new growth. When new growths are withering the problem is usually not enough water.