My laptop got rained on. After initially drying it out, the laptop wasn't turning on. Then it would turn on but was shutting down very rapidly. I followed this guide as far as the keyboard and adaptive LCD display removal. After disassembling and cleaning with isopropyl alcohol and compressed air (including some bluish deposits on ribbon cable connectors) the laptop now powers on without the battery and also with the battery installed. I also reapplied the thermal paste to the fan as advised.

The only thing not working is the LCD adaptive keys display, which I understand is universally hated, but nevertheless somewhat important.

Will try and go the whole way through the disassembly to see if I can get that going again. But for now very grateful for this guide.

I would strongly recommend using a tight fiited pair of disposable vinyl gloves both for grip and avoiding unwanted microsubstances getting on the microchips when doing this :)

(The SSD exits and enters at a slight diagonal angle.)