Fan printhead, Short Circuit

[jeroen-somers 1]

Hello my name is Jeroen from the Netherlands.

I have a Ultimaker 1.

My problem is the Fan at the printhead.

I bought a second fan for some extra cooling.

when i tried to test it I short circuit it.

for a minute or 2 my printer didn't turn on. When it did turn on again my fan wouldn't stop spinning. it won't go off.

For as far as i know the printer stil functions, its only the fan that's "crazy"

Please help me.

greetings,

Jeroen

 

 

[gr5 1,190]

You broke Q4. The darlington transistor. It is easy to replace if you have beginner soldering skills. This large 3-pin part is located very close to the fan plug. It is not an expensive part.

 

[jeroen-somers 1]

You broke Q4. The darlington transistor. It is easy to replace if you have beginner soldering skills. This large 3-pin part is located very close to the fan plug. It is not an expensive part.

 

Thnx you very much. I will try it and let you know!

 

[civi 0]

I think that’s true that yow blew the Darlington transistor and you can easily find it as it is black 3 pin devices and moreover you can also find it on the PCB as it is designated as Q4 on the PCB.