Fan Port 0 damaged. Any chance to repair?

[Peter_O]

I seem to have damaged PWM fan port 0 by short cutting it (small spark ).
After that a voltmeters shows 9V instead of 12V when setting port to 255, but the fan is not running at all.

Fortunately all other ports work fine. So I remapped the parts cooling fan to port 2 and the printer is running again.

Question: Is there any possibility to repair pwm port 0?

[dc42]

https://duet3d.dozuki.com/Wiki/Connector_and_spare_part_numbers#Section_Fan_mosfet

[Peter_O]

@dc42

That was fast! Perfect! Thanks a lot!
I might not be the first one ...

[dc42]

@peter_o said in Fan Port 0 damaged. Any chance to repair?:

@dc42

That was fast! Perfect! Thanks a lot!
I might not be the first one ...

You are certainly not the first one! Damaged fan mosfets cause by fan shorts are the most common way for users to damage a Duet. The 1A fuse we added in later revisions protects the PCB from damage, but the fuse isn't quick enough to protect the mosfets.