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Extruder Not Heating

Posted: Wed Feb 15, 2017 5:38 am
by Marco_p
Hello,

I bought my 3D printer some months ago (Geeetech Unassembled Prusa I3 X 3D printer DIY kit). I have not been able to print because I cannot heat my extruder. I have already followed all of the processes in this web page: viewtopic.php?f=19&t=17039. All of the resistances and voltages give me the right measures, the LED light as indicated, and the thermostats also work.

My potentiometer is also working, I have also measured the voltage.

I never could find something that was not working as indicated, so I bought a new GT2560 and a new Extruder. The extruder cannot go over 30 degrees. I do not know if it may be a firmware problem.

Please help.

PS. My heatbed heats perfectly.

Re: Extruder Not Heating

Posted: Wed Feb 15, 2017 3:38 pm
by bang
Maybe you can try reflashing the firmware for your ProX:
1)Download it:
download/file.php?id=1589
2)Upload the firmware again after that by referring this post:
viewtopic.php?f=13&t=17181

Then did you check if you have the thermistor cable of your extruder0 correctly connected to the board?
Could you attach some picture of your LCD status and wiring on the board?

Re: Extruder Not Heating

Posted: Sat Feb 18, 2017 8:35 am
by Marco_p
Bang,

Thank for your help. I already reflashed the firmware, but nothing came up. the thermistor cable is connected correctly. Even though, the hot end never gets hot.

Here I am attaching some photos on the wiring. Sorry they are a little bit shitty.

Here is the thermistor reading the ambient temperature.
2.jpg
Here is the thermistor reading the ambient temperature.
2.jpg (116.96 KiB) Viewed 5471 times
Here it is after 45 minutes, with the "Heat PLA" option on the panel board. As you can see, the bed has been heated to 70 degrees, although the extruder does not go above 26 degrees.
4.jpg
Here it is after 45 minutes, with the "Heat PLA" option on the panel board. As you can see, the bed has been heated to 70 degrees, although the extruder does not go above 26 degrees.
4.jpg (134.66 KiB) Viewed 5471 times
This is the reading after 15 minutes since I sent the order of heating from the computer.
4.jpg
Here it is after 45 minutes, with the "Heat PLA" option on the panel board. As you can see, the bed has been heated to 70 degrees, although the extruder does not go above 26 degrees.
4.jpg (134.66 KiB) Viewed 5471 times
A picture of the top of the Control Board.
5.jpg
A picture of the top of the Control Board.
5.jpg (179.13 KiB) Viewed 5471 times
A picture of the power outlet, and usb port area of the control board
6.jpg
A picture of the power outlet, and usb port area of the control board
6.jpg (217.87 KiB) Viewed 5471 times
The left-lower part of the control board
7.jpg
The left-lower part of the control board
7.jpg (202.96 KiB) Viewed 5471 times
I really have no idea what is happenning that the extruder just does not heats.

Re: Extruder Not Heating

Posted: Tue Feb 21, 2017 1:59 pm
by bang
Okay,maybe the component(the mosfet controoling the heating of extruder) on the board had a problem.
You'd better refer to this post to verify it:
viewtopic.php?f=19&t=17039

Re: Extruder Not Heating

Posted: Wed Feb 22, 2017 7:17 am
by Marco_p
the mosfet LED lights are on. Therefore the mosfet should be in good shape. And I have another GT2560 which, also, does not work. What could it be then?

Re: Extruder Not Heating

Posted: Wed Feb 22, 2017 3:21 pm
by bang
If it is in this case,i guess the heating cartridge of extruder was broken.
Did you test the resistance of it like the attached post above?

Re: Extruder Not Heating

Posted: Sun Feb 26, 2017 2:26 pm
by Marco_p
Yes. And this is my second extruder.

Re: Extruder Not Heating

Posted: Wed Mar 08, 2017 7:42 am
by Marco_p
Any idea?

Re: Extruder Not Heating

Posted: Wed Mar 15, 2017 3:19 pm
by bang
Did you replace the heating cartridge and fix the issue?

Re: Extruder Not Heating

Posted: Mon Jul 22, 2019 10:45 am
by William
Hi, Can you describe the problem in detail?