1 Topic by custom.made

  • custom.made
  • Member
  • Offline
  • Registered: 2015-10-12
  • Posts: 31

Topic: Extruder not heating (Getting stuck at 190C?)

As title suggests.

Ive recently replaced my thermistor, due to old one been damaged, and then shortly after the prints were all bumpy.

Turned out the nozzle was mis shaped somehow, so I bought a new block and heater and thermistor, then the heat would get stuck around 140C.

Replaced everything, no joy. So ordered the e3d? full set and basically used the end/thermistor/heater from that. It was getting stuck around 170, did a printer reset and now about 190 but that's all it does hangs there and wont load/print.

Also slow getting there (Bed heats up quicker than nozzle which is not normal). Any ideas? Is it a heating problem or is there any way my da vinci thinks the temp is lower then it is so heater cant heat up enough to match da vinci's settings. Which is why it hangs?

Going to get laser temp reader tomorrow to check hot end to see if it actually is high or low.
Any help appreciated.

2 Reply by custom.made

  • custom.made
  • Member
  • Offline
  • Registered: 2015-10-12
  • Posts: 31

Re: Extruder not heating (Getting stuck at 190C?)

To add, I just realised that when idle nozzle showing 35C which I think is normal? So no idea why heater cutting out at certain temps

3 Reply by IronMan

  • IronMan
  • IronMan
  • PRINTiT
  • Offline
  • From: SC
  • Registered: 2012-09-14
  • Posts: 1,269

Re: Extruder not heating (Getting stuck at 190C?)

Your thermistor should show whatever is room temp...and I doubt that it is 35C!

When you changed your thermistor, did you reflash the firmware to reflect the new thermistor?  They have different lookup tables...

SD2 - Stock - Enclosure - Heated Bed - Glass Plate - Auto Fire Extinguisher
Ord Bot Hadron - RAMPS 1.4 - Bulldog XL - E3D v6 - 10" x 10" PCB Heated Build w/SSR - Glass Plate
Thanks for All of Your Help!

4 Reply by carl_m1968 (edited by carl_m1968 2016-02-05 02:15:23)

  • carl_m1968
  • carl_m1968
  • Member
  • Offline
  • From: Far North almost not Dallas
  • Registered: 2014-10-17
  • Posts: 6,512

Re: Extruder not heating (Getting stuck at 190C?)

Unless you bypass the tuning resistor on the mainboard of the Da Vinci which it's location is not even known. You have to have access to the firmware so you can change the resistor type to 5. The stock thermistor in a Da Vinci is not the standard 100K thermistor. To add as I said they put an offset resistor on the motherboard which is in parallel with the thermistor which changes it's value.

Putting the regular 100K in it makes it not a 100K due to the offset resistor.

The only real fix is to flash to Repetier if you have not and then change the Sensor type for the extruder to 5.

Printing since 2009 and still love it!
Anycubic 4MAX best $225 ever invested.
Voxelabs Proxima SLA. 6 inch 2k Mono LCD.
Anycubic Predator, massive Delta machine. 450 x 370 print envelope.

5 Reply by custom.made

  • custom.made
  • Member
  • Offline
  • Registered: 2015-10-12
  • Posts: 31

Re: Extruder not heating (Getting stuck at 190C?)

Oh I see, not sure what to do then?

I have a da vinci 1.1 so I cant flash as far as I'm aware?

No way I can buy a thermistor like the original?

6 Reply by carl_m1968

  • carl_m1968
  • carl_m1968
  • Member
  • Offline
  • From: Far North almost not Dallas
  • Registered: 2014-10-17
  • Posts: 6,512

Re: Extruder not heating (Getting stuck at 190C?)

Should have said you had 1.1 up front. This uses their newest board and parts. The thermistor on it may not even be the same as the 1.0 or 1.0a
The board most certainly is not. Not many own this one so the reverse engineering is lacking and that puts you own your own. All you can do is measure the resistance across the original thermistor at room temp and see if you can find a comparable one on mouser, digikey, or ebay.

Printing since 2009 and still love it!
Anycubic 4MAX best $225 ever invested.
Voxelabs Proxima SLA. 6 inch 2k Mono LCD.
Anycubic Predator, massive Delta machine. 450 x 370 print envelope.

7 Reply by custom.made

  • custom.made
  • Member
  • Offline
  • Registered: 2015-10-12
  • Posts: 31

Re: Extruder not heating (Getting stuck at 190C?)

Ugh. Its been binned a while ago now. Strange thing is. When I initially changed the thermistor on the original hot end...  It worked? It was just due to the damaged nozzle why I changed the block. Any other thing I could do? Other then contact da vinci or claim on house insurance?

8 Reply by nosbigxam

  • nosbigxam
  • Newbie
  • Offline
  • Registered: 2016-02-06
  • Posts: 2

Re: Extruder not heating (Getting stuck at 190C?)

Is error 0014 appearing on the LCD for you/

9 Reply by custom.made

  • custom.made
  • Member
  • Offline
  • Registered: 2015-10-12
  • Posts: 31

Re: Extruder not heating (Getting stuck at 190C?)

Hi, No errors yet. Thanks

10 Reply by custom.made

  • custom.made
  • Member
  • Offline
  • Registered: 2015-10-12
  • Posts: 31

Re: Extruder not heating (Getting stuck at 190C?)

Just a bit of feedback. It looks like a connector issue I'm thinking. Ive read elsewhere that the thermistor is a standard one?

Moving the position of the extruder changes the value the temp will reach before cutting out. Earlier I got it to full temp so going to try replacing connector and see what happens as its clearly making the connection. somethings lose somewhere at least I know that much now lol