1 Topic by nasabound1

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Topic: Need some help troubleshooting the motherboard

I was printing a simple box that I have printed over 100 of before.  Left the machine alone as usual and came back to find it in home position with a partially completed box.  The printbed shows a temperature of 26.4 and does not change when I apply the heat button. The extruder shows a temperature of 0.00 and does not respond when i apply heat. The x, y and z does not move when commanded. The extruder does not move either. 

Is there a common cause other than the motherboard that someone has found?

Thanks in advance..

Dave

2 Reply by wardjr

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Re: Need some help troubleshooting the motherboard

Start by unplugging everything and shutdown.  Then reboot and reconnect and tell us what the extruder temp reports.  Probably just a bad connection on the thermistor.

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3 Reply by nasabound1

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Re: Need some help troubleshooting the motherboard

Unplugged everything. extruder reports 0.00.

4 Reply by wardjr

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Re: Need some help troubleshooting the motherboard

can you control (manually) any of the axis?

Printit Industries Model 8.10 fully enclosed CoreXY, Chamber heat
3-SD3's & a Workbench all fully enclosed, RH-Slic3r Win7pro, E3D V6, Volcano & Cyclops Hot End
SSR/500W AC Heated Glass Bed, Linear bearings on SS rods. Direct Drive Y-axis, BulldogXL
Thanks to all for your contributions

wardjr's Website

5 Reply by nasabound1

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Re: Need some help troubleshooting the motherboard

I rebooted the computer. Removed and reinstalled all of the connections. everyone i could find. i cannot control any axis manually. heatbed is still reporting 26.7 degrees, extruder is 0.

6 Reply by nasabound1

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Re: Need some help troubleshooting the motherboard

as a follow up.. When i load a print job and slice it.. I start the job and the print bed moves, the x and y move as well. The print head goes to the park position, hard up against the stop micro switch. The display shows the print continuing but nothing is moving.

7 Reply by wardjr

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Re: Need some help troubleshooting the motherboard

So your thermistor on your hot end has a shorted connection.  Look closely near where it is attached to the hotend,  you'll most likely find the wires shorting against the heater block.  That insulation slides away easily so you want to slide it back tight against the bulb of the thermistor.

Printit Industries Model 8.10 fully enclosed CoreXY, Chamber heat
3-SD3's & a Workbench all fully enclosed, RH-Slic3r Win7pro, E3D V6, Volcano & Cyclops Hot End
SSR/500W AC Heated Glass Bed, Linear bearings on SS rods. Direct Drive Y-axis, BulldogXL
Thanks to all for your contributions

wardjr's Website

8 Reply by nasabound1

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Re: Need some help troubleshooting the motherboard

apparently there is a broken wire on the thermistor. I tugged on it and the insulation came off completely exposing the broken wire... when i touched the 2 wires, it did report room temperature.

9 Reply by wardjr

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Re: Need some help troubleshooting the motherboard

yep not a big deal is yours taped onto the heatblock?
you can order them from a lot of places and they are cheap so get a few.  filastruder.com sells them

Printit Industries Model 8.10 fully enclosed CoreXY, Chamber heat
3-SD3's & a Workbench all fully enclosed, RH-Slic3r Win7pro, E3D V6, Volcano & Cyclops Hot End
SSR/500W AC Heated Glass Bed, Linear bearings on SS rods. Direct Drive Y-axis, BulldogXL
Thanks to all for your contributions

wardjr's Website