I have a water damage switch that I’m trying to repair but cannot figure out what’s causing the fan to run every time I shutdown.
Fan would run normal when system is on. Fan doesn’t run until I play a game and shuts off when I’m not playing.
But I notice when I shut down the system (not sleep mode) but shutdown by holding power button and power option and choose shutdown. This will trigger fan to go on at full blast
Here is the golden rule for me concerning liquid damage/contamination. Replace the mother board. You just don’t know how far the damage went that is hidden from view. You also run a risk of issues later on when the liquid that started corrosion will finish the job later.
Measurement on the smal resistor was way off. The tiny one between the joycon connector and the BQ chip. Right side reading was correct. Left side was quadruple the amount. Deciding to remove that connector and replace new one. After replacement from donor board. Switch is function as normal with no fan issue