Da Vinvi 1.0 Extruder Head Not Heating

[TonyDines]

Hi,

My son has an issue with his Da Vinci 1.0 which would I appreciate some advice on.

The printer developed two faults at exactly the same time:

The heater on the extruder is failing to heat. The thermistor is reading temperature OK as placing a heat source (i.e. hairdryer), in the vicinity of the extruder shows a temperature increase.
The front panel display also failed so we are using Repetier Host to control the printer.

As further background. The print bed is heating without any issue. The head moves around with no problems. We have also replaced the entire extruder head with an official Da Vinci item in bid to resolve the issue but has made no difference to the fault.

Any advice on what can be done to turn this rather large paperweight back into a useful 3D printer would be very much appreciated (and print some actual paperweights XD).

Finally thanks to everyone who takes the time to read this post and responds.

Regards,

Tony.

[Alexi]

Hi Tony, We have a DaVinci that at times has also been more a paperweight than 3D printer. We have quite heavily modified ours, including replacing the hot end with one by e3d. In the process of doing this and leading up to us making this change we encountered a similar problem to your own. I can’t promise that it’s the same error and thus repairable in the same way, but it is certainly a possibility. The issue might be with the thermocouple. Assuming that this wasn’t replaced when you swapped in your new parts it may have either become disconnected from the control board or may simply be broken. I hope this helps, if you need any more advice please do let me know and I’ll see what I can do to help. Best Alexi

[WillPio]

It might be worth changing the connector on the top of your extruder but Alexi is on the right track.

[joshua_coke_3]

It has been the plug on 5 different machines I have worked on.

[Theofficialomi]

I actually just had the same issue

There was a short in my motherboard, recommend to find out if this is the problem take a multimeter and test the extruder wires it should read 12 V if everything is good.

Ended up bringing it up to XYZ

And getting another motherboard

It was about $115 Shipping included

Hopefully this helps all the best

ali q

[Techswap3D]

Hey, in my experience most of the time people short out the heater accidentally with the metal brush for cleaning the nozzle.
This results in a fuse that blows out on the motherboard. This one is placed right above the connector on the motherboard.

A possible fix is to either bypass the fuse ( I do not recommend this solution because it might be a fire hazard. )
The best way to fix this problem is to solder a new fuse on the board. ( just search for the correct one )

If i remember correctly it is the fuse labeled J4 on the board.