Fan not working all of the sudden Hi guys! The other day I sent a print and came back to see a mess. Printing another file made it clear that the problem was the fan was not turning on (I'm printing ABS). What I've tried: - M106 / 107 on pronterface : Fan not turning on - Setting fan to work all the time while printing on slic3r : No result - Changing to another fan : No result Could someone perhaps guide me using a multi-meter to find out where the problem is? Everything else (motors and heaters) are working fine. Thanks! https://reprap.org/forum/read.php?292,592656,592656#msg-592656 Wed, 22 Jul 2026 03:20:04 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?292,592656,593487#msg-593487 Re: Fan not working all of the sudden https://reprap.org/forum/read.php?292,592656,593487#msg-593487 nophead Mendel90 Sun, 06 Dec 2015 08:38:44 -0500 https://reprap.org/forum/read.php?292,592656,593418#msg-593418 Re: Fan not working all of the sudden https://reprap.org/forum/read.php?292,592656,593418#msg-593418
The reading at the fan connector on the Melzi is 11.7-11.8V]]> sharonf88 Mendel90 Sun, 06 Dec 2015 05:49:49 -0500 https://reprap.org/forum/read.php?292,592656,592854#msg-592854 Re: Fan not working all of the sudden https://reprap.org/forum/read.php?292,592656,592854#msg-592854 nophead Mendel90 Fri, 04 Dec 2015 13:20:30 -0500 https://reprap.org/forum/read.php?292,592656,592762#msg-592762 Re: Fan not working all of the sudden https://reprap.org/forum/read.php?292,592656,592762#msg-592762
Check the voltage at the fan connector on the Melzi. There should be 12V across the two terminals when the fan is on.]]> nophead Mendel90 Fri, 04 Dec 2015 08:52:55 -0500 https://reprap.org/forum/read.php?292,592656,592656#msg-592656 Fan not working all of the sudden https://reprap.org/forum/read.php?292,592656,592656#msg-592656
The other day I sent a print and came back to see a mess. Printing another file made it clear that the problem was the fan was not turning on (I'm printing ABS).

What I've tried:
- M106 / 107 on pronterface : Fan not turning on
- Setting fan to work all the time while printing on slic3r : No result
- Changing to another fan : No result

Could someone perhaps guide me using a multi-meter to find out where the problem is?

Everything else (motors and heaters) are working fine.

Thanks!]]> sharonf88 Mendel90 Fri, 04 Dec 2015 05:45:52 -0500