Started up my Ender 3 today and the print killed halfway because my cat was messing with the cable to my octopi, but when I went to shut it off to reboot and the actual switch seems permanently on (as in stays on regardless of position). do I need a new PSU? and is this a known issue?
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The mains switch is easily replaced - the part is widely available. Just make sure that the spade connectors go on securely and to the same positions as the old one.
Here's how the wires are connected in my Ender 3's mains input:
The IEC mains connector is on the right in the first image. You can see the yellow wire goes to the earth connection of the PSU. The black wire goes to the neutral connection of the PSU. The live input goes via a wire strip to one end of the fuse, the other end of the fuse is connected to the central pole of the switch, and the on-position of the switch is connected to the live connection of the PSU via the red wire which leaves the picture.
The switch is on the left in the first image, and at the bottom in the second image.
Andrew Morton
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