Fans don't turn on/work
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Does the fan work at all when connected to the always on port?
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No it doesn't
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Do other fans work when connected to that always on port?
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No any other ones won't turn on when connected to the always on ports.
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The electronics case one used to but it doesn't anymore.
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Ok, that means that either your fans are all dead, or there is either a blown fan fuse or damaged mosfet(s).
Do any of those fans work with any of the other ports?
Can you post some photos of the fan port area? Close up and well lit.
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Here is a picture of the fan area. I think I might have the cables to the fans in backwards.
(image url) -
@Asabol If the fan cables are red and black the red cable is typically positive and black negative. If they use other colors it's less certain. What kind of printer is this? If it's a creality printer, then the part cooling fan has the yellow (+) and blue (-) wires, and the hot end heatsink fan has unterminated bare red (+) and black (-) wires, and the case fan has a terminated red (+) and black (-) wires.
The fans themselves usually have a + or - where the wires connect to the fans.
Unfortunately, reversing polarity on fans has a tendency to kill them.
Your photo isn't clear enough to see the fan mosfets.
See here for an example image: https://duet3d.dozuki.com/Wiki/Connector_and_spare_part_numbers?revisionid=HEAD#Section_Fan_mosfet
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I am using a Creality Ender 3.
Here is a better picture for you to see the fan mosfets.
(image url) -
They look ok in that image.
It's possible that you've blown the fan fuse. It's located next to the fan ports and has a number 1 on the top of it. You will probably have to remove it and check it with a multimeter for continuity to check if it's blown or not if you can't immediately tell visually.
https://duet3d.dozuki.com/Wiki/Connector_and_spare_part_numbers?revisionid=HEAD#Section_Blade_fuses
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Any tips on how to go about removing the fuse?
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Ideally with a fuse puller, but pliers and firm wiggling should do it.
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pull it straight up?
or print a fuse puller (mini auto/blade fuse)
https://www.thingiverse.com/search?q=fuse+puller&type=things&sort=relevant(or what he said
... I blame thingiverse for being sooooooo sloooow!) -
So after testing the fuse we concluded that it is a dead fuse. I don't have any other 1 amp fuses laying around. I do however have a 2 amp fuse. Would it be ok to run a 2 amp fuse or would I be at risk damaging the board and or the fans?
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You can use a 2A fuse if you have one handy. It will just take longer to blow and risk more damage. 1A fuses can usually be found in automotive or motorcycle shops more commonly.
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Hey thanks for all the help. Question do you have any recommendations for where I could buy a replacement 1 amp mini blade fuse? Considering it is kind of hard for me to find them locally.
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If you can find 1A blade fuse that is larger it is possible to trim the legs and make it fit the mini fuse holder. Doesn't look great but works. (will see if I can add a picture tomorow)
Most electronics suppliers online will have the fuses, as well as amazon, ebay and the usual range of chinese sites.
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@Asabol said in Fans don't turn on/work:
Hey thanks for all the help. Question do you have any recommendations for where I could buy a replacement 1 amp mini blade fuse? Considering it is kind of hard for me to find them locally.
Try eBay.
