crazy temps

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LittleTrip
Posts: 15
Joined: Sun Oct 27, 2019 12:28 pm

crazy temps

Post by LittleTrip » Mon Oct 28, 2019 8:32 am

well i own a geeetech A20M and my temps both read 117 for the nozzle and 122 for the heatbed well i have them off i just had a probelm of my nozzle resading 357 but when i unplugged my thermistor the temps changed to 117/122 anyone have any ideas?? im hoping its not the board

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William
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Posts: 6340
Joined: Tue Jun 07, 2016 9:38 am

Re: crazy temps

Post by William » Mon Oct 28, 2019 9:27 am

Hi, you can try to measure the thermistor,
If you don't have a multimeter,
you can try to unplug the thermistor and check the temperature display.

If the temperature does not show a negative temperature without heating,
it may be a motherboard problem.
-Keep your mind and try to test it. :)
-Everything will be fun!-Support all Getech printer.
-You can ask me the questions and I will kindly reply.
-Respect others is the best way you can get help!

LittleTrip
Posts: 15
Joined: Sun Oct 27, 2019 12:28 pm

Re: crazy temps

Post by LittleTrip » Mon Oct 28, 2019 9:35 am

changed the thermistor and checked the wires and connectors seem to be all good im hoping really hoping its not the board and im gonna try the marlin thing you said i also have a multimeter not to sure on how to use it but i got one :)

3DAngel
Posts: 77
Joined: Tue Aug 06, 2019 2:04 pm

Re: crazy temps

Post by 3DAngel » Mon Oct 28, 2019 10:23 am

Prove the thermistor on Ohm it should be reading around 100 K ohms ambient temp.

LittleTrip
Posts: 15
Joined: Sun Oct 27, 2019 12:28 pm

Re: crazy temps

Post by LittleTrip » Tue Oct 29, 2019 5:49 am

well i was playing around with the wires and heard a spark by my hotend now nothing works :( if it was not fried its fried now lol no power to the fans or hotend i think i killed it screen dont even turn on anymore booooo im so glad this is not my only printer lol

LittleTrip
Posts: 15
Joined: Sun Oct 27, 2019 12:28 pm

Re: crazy temps

Post by LittleTrip » Tue Oct 29, 2019 6:41 am

im gonna check them but im gonna get a friend that knows what hes doing to look first lol cause it happened when i was checking the wires going to the hotend i think i may of hit something i should not of with my multimeter booo im new lol

3DAngel
Posts: 77
Joined: Tue Aug 06, 2019 2:04 pm

Re: crazy temps

Post by 3DAngel » Sun Nov 03, 2019 2:11 am

the most suspicious place to check in the printer is the X carriage.
the way the carriage is build and because of te Extruder ext board, the cabling goes nder and cross near the wheels.

if not installed right or secured away from the wheels, it might cause that short from worm cables.

in my case, my Extruder ext. Board the PCB trace was shorted and broken off.
once replaced a new one that I received from Geeetech, all is good now.

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