Fuse F3 blown on first preheat
So after nearly a week of assembly and adjustments I finally managed to get my i3 MK2 assembled:
- Selftest OK.
- Calibrate XYZ: OK - axes are perpendicular 😀
So I went to insert the filament but I was seeing "ERR: MINTEMP BED" as it was only 11 degrees C in the garage,
After applying some heat with a heat gun to get to > 15 degrees and power cycling the machine I went to "Preheat" selected PLA and then....
Everything shut down.
Having pulled the fuses it looks like F3 has blown 🙁
Does anybody have an idea whether this could be a wiring issue, bad luck or cold weather (or all 3)?
Re: Fuse F3 blown on first preheat
I had this issue with my other 3D printer. To fix the issue both by Mk2 and other printer are under a $6 Bella plastic storage container.
I heat the air in the enclosure using a $12 space heater, one with the knob thermostat built in.
Re: Fuse F3 blown on first preheat
...
Having pulled the fuses it looks like F3 has blown 🙁
Does anybody have an idea whether this could be a wiring issue, bad luck or cold weather (or all 3)?
💡 might be either bad luck or a wiring issue with the heatbed (don't think it's weather related).
❓ did you replace the fuse (15A, i think a car fuse will do) ?
➡ can you measure the resistance of the bed ? should be at about 1 ohm (+/- 0.2 ohm).
or maybe somebody assembled the c54 in the wrong direction, which will blow up that capacitor with an intensive smell like rotten fish
dem inscheniör is' nix zu schwör...
Re: Fuse F3 blown on first preheat
Check the PSU is set to the correct voltage.
Check that the power inputs are in the correct sockets - it has been known for users to plug the power inputs into the bed/extruder heater outputs and heater plugs into the power inputs.
Check that there are no shorts on the bed cables.
The self test should heat the bed a little, so it may be that you only need to swap the 15Amp fuse.
Peter
Please note: I do not have any affiliation with Prusa Research. Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage…
Re: Fuse F3 blown on first preheat
I suspect I've also blown the fuse, but I haven't come across this kind of fused socket before. How do I open it to get at the fuse without breaking it? Thanks. 😳
Re: Fuse F3 blown on first preheat
I suspect I've also blown the fuse, but I haven't come across this kind of fused socket before. How do I open it to get at the fuse without breaking it? Thanks. 😳
💡 there's nothing to open. just pull the blue 15A fuse (the whole thing with the blue plastic) out of it's socket and replace it with a new one.
➡ you can get these kind of fuses at every well sorted car shop (or even at your petrol filling station).
dem inscheniör is' nix zu schwör...