Fans issue geeetech i3x printer

[shadowcaster]

Hi. I bought the printer in the subject and after many problems in assembling i have a issue with fans..the two fans didn't work. I tried to start those by repeater host but nothing. I tried in different plug on the mother board, fan1 fan2 fan3 and pwm. But nothing...if i power it with external 12V the fans work properly but not if i try to power by mother board. What i have to do? Regards.

[William]

Hi. I bought the printer in the subject and after many problems in assembling i have a issue with fans..the two fans didn't work. I tried to start those by repeater host but nothing. I tried in different plug on the mother board, fan1 fan2 fan3 and pwm. But nothing...if i power it with external 12V the fans work properly but not if i try to power by mother board. What i have to do? Regards.

Hi,my friend
1.What you mean about your external voltage?And Where did it come from?
2.About the not working fans,you'd better check the voltage between Pin1 and Pin2 of the posted pic to see if it is 12V.

4.png (604.38 KiB) Viewed 12599 times

Good Luck

[shadowcaster]

Hi. Thanks a lot for reply. For external voltage i mean that i fan test with a 12V battery. But there is a command to start the fans? Regards.

[William]

Hi. Thanks a lot for reply. For external voltage i mean that i fan test with a 12V battery. But there is a command to start the fans? Regards.

No,a command is just needed for the PWM fan.But yours is common fans.So,did you test the voltage i told you?It is 12V if the MOSFET is good.

[shadowcaster]

I will try. But if isn't voltage, what can i do? Regards and thanks a lot.

[shadowcaster]

Hi. What mosfet? What can i do if there is not voltage? I am not at Home and when i came back, i want to try all the tips. Regards.

[William]

Hi. What mosfet? What can i do if there is not voltage? I am not at Home and when i came back, i want to try all the tips. Regards.

Sorry，my mistake.I mean the chip i marked before.

[shadowcaster]

Hi. If i haven't 12V on the chip, what can i do?

[William]

Hi. If i haven't 12V on the chip, what can i do?

Hi,
You can have a try first.Let me know if you have any question after that.

[shadowcaster]

Hi. I ask to seller and he told me to check jp2. If not connected, to use a cap...
I use a 12v input...
I am confused.