SassyDalmatian 0 Posted February 15, 2016 in Fan is not running like it should. So, recently I acquired a new fan, as my old one was busted. This was same maker, same everything. When I plugged it in, however, my fan started to make this high pitched noise, and wouldn't start via the control board. However, when I spin it's blades on my own, it keeps on running. Thinking this was only the fan model, I plugged in another 24v fan. Excluding the high pitched hum, the exact same problem was there. What can I do to fix this? Share this post Link to post Share on other sites
Labern 715 Posted February 15, 2016 in Fan is not running like it should. Is this on UMO+ Cooling fan? Share this post Link to post Share on other sites
SassyDalmatian 0 Posted February 16, 2016 in Fan is not running like it should. It is the print head fan on the Ultimaker Original +, yes... Probably should have made that clearer... Share this post Link to post Share on other sites
neotko 1,354 Posted February 16, 2016 in Fan is not running like it should. (edited) If the new fan has the same specs as the original, maybe the board pwm fan was busted by that short circuit you got (old post I remember you wrote). So. Easiest way to test if it's the board it's to connect the fan to the led pwm (both parts have the same circuit). Then you need to send the gcode M42 S128 to set the led pwm to 128 of 255. If the fan it's ok it should work. If the problem remains it's the fan. So if you do that and it works on the led pwm then your pwm fan it's dead (probably a resistor or most probably the transistor since you got a short circuit before). If so, I did a post long ago that explains (more or less) how to change it (but you need the propper tools and steady hand). So try that first and if works on the led pwm you might need a firmware modded to change the pwm fan to pwm led, this way you would have a working by gcode fan. Please triple check before pluging the fan to the led that the +/- it's perfectly in order, doing it wrong might break the led pwm also (if that's the problem). Edited February 16, 2016 by Guest Share this post Link to post Share on other sites
SassyDalmatian 0 Posted February 17, 2016 in Fan is not running like it should. Hmmm... the computer I'm working at doesn't recognize my printer as a device, and wont connect via USB Cable... Is there any way at all to send the gcode over via SD Card? Share this post Link to post Share on other sites
neotko 1,354 Posted February 17, 2016 in Fan is not running like it should. (edited) Yes. Make a txt file with the gcode commands. Remember to insert a return after each line or they won't work. Or get a gcode, edit, clean, and paste your gcode lines. Edited February 17, 2016 by Guest Share this post Link to post Share on other sites
SassyDalmatian 0 Posted February 23, 2016 in Fan is not running like it should. Okay, so the fan worked as it should. Where should I go to get the custom firmware? Share this post Link to post Share on other sites
neotko 1,354 Posted February 23, 2016 in Fan is not running like it should. (edited) So fan works when using led pwm. Ok. Then you need to make your owm marlin. http://www.extrudable.me/2013/05/03/building-marlin-from-scratch/ I use @amedee branch https://github.com/AmedeeBulle/Marlin On pins.h under the ultimaker 2.1 board you need to swap the pins of fan pwm with led pwm Edited February 23, 2016 by Guest 1 Share this post Link to post Share on other sites
neotko 1,354 Posted February 23, 2016 in Fan is not running like it should. Btw I bet that the transistor died on pwn fan. If you have a friend or your know how to change smd chips it's quite easy and the transistor chip it's just 0.10€ or so. Here's how I changed mine https://ultimaker.com/en/community/17214-fan-pwm-output-0v-umo-board-solved-not-solved#reply-118977 Share this post Link to post Share on other sites
mariuszem 4 Posted October 9, 2017 in Fan is not running like it should. I did same with Ultimaker Original. There is BD679 to be resoldered. Share this post Link to post Share on other sites
