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MK2s suddenly experiencing Bed Thermal Drop  

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GeorgeInk
(@georgeink)
New Member
MK2s suddenly experiencing Bed Thermal Drop

I have been printing face shields for a few weeks (about 80 so far) with no issues. Now suddenly this evening I'm experiencing temperature drops in the bed and after 3 or 4 layers Thermal Runaway stops to the prints. Is there a solution more likely than another. I've checked the fuses and read about raising the voltage, but it has been working without incident for months.

Posted : 29/05/2020 3:04 am
sam.s
(@sam-s)
New Member
RE: MK2s suddenly experiencing Bed Thermal Drop

had similar problems with mine.  turned out the thermistor was cracked/broken.  as it heated up, it would expand/change and the readings would fluctuate so the point the thermal_runaway message occurred. 

i took apart the thermistor from the hotend and could replicate the problem on the bench while it wasn't moving. 

anyway, replaced thermistor and all is good again.

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Posted : 30/05/2020 7:51 pm
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