Hardware Nintendo Switch fan always continuouly on

[maximus007]

I've had to replace the fpc lcd connector as there was a bent pin,

After putting the console back together the fan just stays on and it's at full speed, I mean it's throwing out lots of air.

I know the fan connector is next to the LCD fpc connector, but can't see anything odd.

I'm getting constant 5v on the fan connector, when it's in sleep mode the fan stops.

What should the voltage be when the fan is running at normal speed?

Any diagrams or suggestions appreciated

 

[thesjaakspoiler]

Usually PWM (pulse width modulation) is used to change the fan speed.
So with a multimeter you might still see something around 5 volt.

I think Hekate has temperature information.
Take a look if your Switch thinks the lcd is really hot.

Some other LCD units contain a build in temperature sensor that is used by a CPU/MPU.
I couldn't find any information about the pinout of the LCD for the Switch.
Maybe some connections on the new connector aren't seated properly and
now the Switch thinks your LCD is smoking hot.

NorthridgeFix has close ups of the connector in case you don't want to remove the new lcd connector.

 

[maximus007]

it was this little guy, moved slightly out of place, nightmare to get back on without melting the connecotor, now fans working as it should.