hotbed/extruder is not heated up(GT2560/GTM32/sanguinololu)

[Prism blue]

If u could give a little more info about this thermistor is located I would appreciate it thank u for your help

[William]

You can check the info on firmware.
100K,NTC thermistor.

[ChrisH90]

Hi, I have a A30 and I think I have problems with the heating element in the nozzle. Can anybody please tell me:
1) Restistance of the heating element
or/and
2) Power of heating element
In the Internet I found heating elements with 24V/40W and I don`t know if they are right.

[William]

Hi,ChrisH90
1.The resistance of the heatbar is 12~16Ω
2.The power of the heatbar is 35~45W

[ChrisH90]

Hi, William,
yeah, that`s it. Okay, I founded broken heating element and changed it. Perfect, thank you so much!!!

[William]

That's a good news that your printer works again.

[martin92]

Hey printer-folks,

I've got a similar problem that the heater was not heating up despite the fact that MOSFET, fuse, LEDs etc. all were OK. There were no 12V on the pins of the hot-end heater while the bed was working fine.

When unmounting the board (GT2560) I discovered this:

heater-pin.jpg (117.52 KiB) Viewed 8789 times

Re-soldered the PIN and got 12V again. First test-print prints since 5min. without problems.

Now, my question is wheter this was just due to bad soldering or is it maybe a symptom of a bigger problem in the setup? Maybe a short-circuit in the heating-element (actually I have changed it some 20 printing hours back)?

Cheers,
Martin