Geeetech

I have burned my model fan connect(which controlled by software from 0-255). But there is still a lot of free connector.And I want to know which numbers i should type in software. I use only one connector of my radiator fans and which which pin is responsible for them and if they support pwm. In marlin I already find led regulation but led connector is too far away from hotend.

that connector pins I need. Air blower isnt working.

Hi, You can measure the position of the PWM connection on the driver board and check if there is a voltage when there is no power.
If voltage exists, the adapter board may need to be replaced;
If not, the PWM needs to be replaced.

OK... A few more question. Just for confidence.
1)Adapter board it is the board near hotend?
2) Im correctly pointed pwm on board on the picture and pin of it i should measure.
3)As I already understand I have burned the only pwm supported port near hotend. But as I can see in marlin fan connectors can use pwm. And what pins numbers a responsible for them? Because now I can controll from lcd only Led connector on driver board.
3.5)In marlin led connector use pin 6. Can I set It in "fanmux" marlinfunction to control it from "fan speed" lcd menu

Hi,The adapter plate is located behind the hot end,
For PWM fans you can refer to this: viewtopic.php?f=24&t=17886
Take measurements
Then determine if it needs to be replaced

OK, but I have gt2560 v3.0 and it is not in the same place as in the picture from the link. Also trying to find the way to resolve that problem I met the user a30 with the same problem and he asked me to ask you where on his board there is a transistor which is responsible for the PWM fan. So can you show where it or refer to some useful links.

I have already found broken transistor. It was Q2 transistor under E0 driver. And it totally broken, it obviously that I should change.
In my town I found similar transistor (AO3400
N-ch; 30V; 5.8A; 1.4W; 0.028 Ohm). Will it work or I have to buy A6sHB?

Hi, You may need to purchase the corresponding model.

Hi, I already have changed transistor, but now when I change on lcd from 1-244 I can hear squeaks from fan.
And when I set 255 it stops.If connect fan to the led connector on driver board Im getting the same squeaks. What else could I damage on my board?

Hi, Do you mean the fan doesn't work or does it work but sounds?