Sunburn or Infection?

[DesignerofBeauty]

I figured it was bacterial/fungal, but was trying to be optimistic that it was something else . A lot of the orchids I received are in poor condition. They were left in a greenhouse for a while after he passed, and his wife was the only person able to care for them.

I am soaking the plants in individual bowls of superthrive and keeping humidity high. Hopefully I can save some! Thank you for your advice, I will order testing kits soon.