Replacement brass nozzle kit not heating up?

Sovol SV06 ACE
1

So, I’m new to 3d printing and I’ve been wanting to try out a .2mm nozzle to print detailed models. Since I still want to have quick access to my .4 nozzle, I decided to order the replacement brass nozzle kit and install a .2mm on a backup so that I could do quick swaps as needed. I received my kit today and set about swapping the .4mm nozzle with my .2mm.

I followed the nozzle replacement video from Sovol Support. When I got to the portion of the video where I was supposed to heat up the new tube to install the new nozzle, the new tube heated up for about 15 seconds and immediately started cooling down. Now, whenever I send a heating command, it won’t heat up.

The touchscreen display seems to still think it’s trying to heat it up, and the fans all whirl like normal. But, the temperature sensor just stays steady at room temperature and the nozzle doesn’t heat.

I’ve inspected all of the plugs and wires about 30 times and can’t see any damage. Any ideas why a brand new nozzle would only heat for about 15 seconds and then fail?

2

Do you have an ohm meter? Sounds like your new heater sh#t the bed on the initial heat up. A 40W 24V heater should be 14.4 Ohms HOT. It will read lower at room temperature. Sounds like a bad crimp connection inside the heater. Just good enough to pass QC but after shipment and more handling it gave up.

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3

Thanks so much for your reply! I don’t have an ohm meter, but your suspicion that the new part simply just blew itself up on first try makes sense.

But, I did re-install my original heater and it still works just fine.

I’ll contact Sovol support and see if they’ll send a replacement.

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4

Following up with an update:

After describing the situation, Sovol support suggested I inspect the ceramic heating element for any damage/defects. I went to remove the bracket and discovered it was cracked in two.

IMG_1832
IMG_18323024×4032 3.33 MB

So, I guess that explains that. I was super careful handling it during installation, so I wonder if the initial heating process exacerbated an existing defect?

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