Part Cooling Fan Won't work

I can’t get the fan to work. The 3 plugs are in, altho the housing wire (top 1 of the 3) slips off so easily. I can’t know for sure all 3 are in.

I have an extra component where the plugs go, and same thing as far as it popping out so easily.

Very frustrating.
Thanks.


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That looks like your ripped the connector out of the circuit board. You’ll need a new printhead circuit board.

This part? If so, the wire still pulls out too easily.

Here’s the fan end.

Just to be clear here, the part you are showing is the “Part cooling” fan, not the hot end fan. Make sure that you are testing the correct fan.

Thanks for that. Yeah, not the hot end fan.

Otherwise the issue stands.

Please try to take a better close up (macro) photo of the male part fan connector

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I had the exact same issue and was able to fix it. The problem for me was that there are plastic rows along the pins on the connector for the fan. Part of one of these had broken off and gotten stuck into the socket on the TH board, which caused the cable to slip out easily. The piece of plastic was so small that I had to remove it with a needle.

It appears that it may have broken off here, also possible that the entire top row broke off, can’t remember if it has a plastic guide like that too.

It seems to slide in all the way but won’t stay in.

On mine it would slide almost all the way in but would not lock in place, it would just fall out.

Are you sure it is lined up correctly? In that fist picture it looks like it is not lined up.
I have plugged those connectors in before and had them totally misaligned where it felt like it was plugged in but was off by a whole row of pins.

This is how the connectors should look with all 3 plugged in:

So you are referring to the 2 that are plugged in, since the third, top 1 is not?

I feel like I’m going crazy because no one else has mentioned this… but it looks like the whole connector has broken off the PCB and is stuck on the plug. If you hold the plug and pull does that part come off?

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In your first picture, the 2nd plug is to high on the connector. I can see that the lower row of pins for the second connector (the hot end fan connector). That row should not be visible when the connector is seated correctly.

That is why I pulled the picture from BL’s wiki page, to show you what it should look like.

I don’t think that’s the case. This was mentioned but the cable looks normal to me and their Toolhead PCB board is not missing a connector in the photos.

But I don’t think that’s the PCB from his printer, I think that’s a replacement.

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This is mine… it is normal.

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Could be, but he posted this today and that board isn’t very hard to remove. Maybe he had a spare lying around though.

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