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BrettG
(@brettg)
Estimable Member
Printer fan not working

So my printer fan stopped working so I assumed it was the fan at fault and ordered another one with the 3 wires yellow/black/red.

Started printer, fan dosent start on boot.

went into temp / Fan speed to 255, still no good.

red cross on selftest on the print fan.

So the green led is active and solid next to the fan port on the buddyboard, I did notice if I hand turn it when set at 255 it will rotate but no where near the high RPM selected more like 10, the green led will flash when its rotating but such a  low speed.

I have a 2nd brand new fan which I tested and had the same results as above.

Updated to the latest Firmware from 4.2.1 to 4.2.2

Im at a loss what to try next.

Best Answer by BrettG:

Been through it with prusa support and they also confirmed it’s more then likely the port at fault on the board more so then the fan it’s self ,

I’ve tried different fans and they all work just not with that board.

Warranty should cover a new buddyboard.

Posted : 03/09/2021 9:57 pm
cwbullet
(@cwbullet)
Member
Fan

Which fan did you buy?  Post a link.  

--------------------
Chuck H
3D Printer Review Blog

Posted : 03/09/2021 11:03 pm
BrettG
(@brettg)
Estimable Member
Topic starter answered:
fan link

 

Posted by: @cwbullet

Which fan did you buy?  Post a link.  

these are what I went for, will double check these in another one of my mini's to just confirm they work or not.

https://www.amazon.co.uk/gp/product/B094F9GWSX/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

Posted : 04/09/2021 5:22 am
cwbullet
(@cwbullet)
Member
should work

Those should work. 

Fans are spotty.  I have quite a few I would have sworn would work but did not.  The Amps and Volts have to be dead on.  

--------------------
Chuck H
3D Printer Review Blog

Posted : 04/09/2021 9:46 am
BrettG
(@brettg)
Estimable Member
Topic starter answered:
spares

 

Posted by: @cwbullet

Those should work. 

Fans are spotty.  I have quite a few I would have sworn would work but did not.  The Amps and Volts have to be dead on.  

Ye I think you're right, to be honest if they don't work and with the need for a new thermistor on another mini.

I'm more then likely gonna go down the route of ordering direct from prusa, I should of added some on on my last order when I purchased  a load of belts and other spares that I needed to do some maintenance but at the time didnt know I needed any.,

Posted : 04/09/2021 10:51 am
BrettG
(@brettg)
Estimable Member
Topic starter answered:
RE: Fan

So I tested the fan on another mini and it worked fine .

retested on the mini with the fault and still no luck , I did do another test and plugged the original fan I thought was faulty into the hotend fan port and it works ok.

So now I’m putting it down to maybe the buddyboard port and if so not sure what I can do next ? 
LEDs active so seems like they’re is some sort of power going to it 

check fuses and seem ok 

This post was modified 3 years ago 2 times by BrettG
Posted : 04/09/2021 1:19 pm
cwbullet
(@cwbullet)
Member
SUGGESTION

 

Posted by: @brettg

 

Posted by: @cwbullet

Those should work. 

Fans are spotty.  I have quite a few I would have sworn would work but did not.  The Amps and Volts have to be dead on.  

Ye I think you're right, to be honest if they don't work and with the need for a new thermistor on another mini.

I'm more then likely gonna go down the route of ordering direct from prusa, I should of added some on on my last order when I purchased  a load of belts and other spares that I needed to do some maintenance but at the time didnt know I needed any.,

I can suggest one that will work if you can find it in the UK.

 

--------------------
Chuck H
3D Printer Review Blog

Posted : 04/09/2021 9:01 pm
BrettG
(@brettg)
Estimable Member
Topic starter answered:
Board

Been through it with prusa support and they also confirmed it’s more then likely the port at fault on the board more so then the fan it’s self ,

I’ve tried different fans and they all work just not with that board.

Warranty should cover a new buddyboard.

Posted : 04/09/2021 10:00 pm
cwbullet
(@cwbullet)
Member
Sucks

That stinks but at least it under warantee.  

--------------------
Chuck H
3D Printer Review Blog

Posted : 04/09/2021 11:17 pm
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