x550vx fan not working

[trmrtts]

hi everybody
i have x550vx main board.this board working ,have image but fan not working
i tried this
bios update
changed ec

and havent fan0_pwm voltage

fan socket voltage
fan0_pwm=0v
fan0_tach=3v
5vs_fan=5v

I/O voltage
31pin fan0_pwm=0 volt
47 pin fan0_tach=3 volt

and u5003 voltage
cpu term u5003
5pin=3.3v
3pin cpu_therm=3.3v
4 pin +3vs=3.3v
1 pin=3.3v

whats wrong

[Duranitron]

Re: x550vx fan not working

is the laptop working fine? make sure to test the pin without the cpu fan..test the fan outside to confirm its working.. and make sure the cpu fan is not the one shorting the fan0_pwm to ground.. if not.. try back tracing.. the pwm signal is produced by the fan controller ic.. try to check that...

[trmrtts]

Re: x550vx fan not working

laptop working,fan working outside with power supply

[Duranitron]

Re: x550vx fan not working

try to hot wire it to keep the fan working unless you have a lot of time to trace it back why its not working,, follow the schematics... https://www.badcaps.net/forum/attach...3&d=1435773716