Well, my dad know about electronics, he normally builds his own amplifiers for music and he know about music too, guitar / piano and singing. He tell me a lot of times if possible to save an electronic apparatus if its off, without energy, for avoid short circuits, and if it complete dry of any humidity when you start it, you can save it and make it work again like nothing happened to it.
Yes you totally can salvage electronics but somethings it give a lot of troubles and is more practical just buying a new one. If you have the idea, tools and knowledge to fix it yourself. Is better you get a new gizmo.
Ah and about my autie“s pc was an pretty old one (Win 98 times), and helps using and ventilator for help it goes totally dry.