Hello All, The 5A fuse that is surrounded by the Power input, LCD pins and heater inputs: F3 i believe, blew up today when I was running a print on TAZ 5 dual extruder. The other 2 fuses seem to be fine. This happened after a few hours of printing and calibrating. Any idea how this could have happened ? I upgraded to the dual nozzle like 5 months back. It was running fine. https://reprap.org/forum/read.php?13,641090,641090#msg-641090 Mon, 10 Aug 2026 19:32:02 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?13,641090,641936#msg-641936 https://reprap.org/forum/read.php?13,641090,641936#msg-641936
What are the hot end heater blocks you're using rated to? If they're 12V heaters running at 24V, they will draw 4x the current that they do at 12V. You might be fine most of the time if you're doing PWM, but PWM isn't a substitute for using the right components.]]> Cefiar Controllers Sun, 20 Mar 2016 00:18:42 -0400 https://reprap.org/forum/read.php?13,641090,641290#msg-641290 https://reprap.org/forum/read.php?13,641090,641290#msg-641290
I can replace the fuse, but wondering if this will happen again. Any solutions ?]]> warankarp Controllers Fri, 18 Mar 2016 09:08:39 -0400 https://reprap.org/forum/read.php?13,641090,641139#msg-641139 https://reprap.org/forum/read.php?13,641090,641139#msg-641139 dc42 Controllers Fri, 18 Mar 2016 03:29:48 -0400 https://reprap.org/forum/read.php?13,641090,641090#msg-641090 https://reprap.org/forum/read.php?13,641090,641090#msg-641090
The 5A fuse that is surrounded by the Power input, LCD pins and heater inputs: F3 i believe, blew up today when I was running a print on TAZ 5 dual extruder. The other 2 fuses seem to be fine.

This happened after a few hours of printing and calibrating. Any idea how this could have happened ?

I upgraded to the dual nozzle like 5 months back. It was running fine.]]> warankarp Controllers Thu, 17 Mar 2016 22:20:52 -0400