PRUSA ORIGINAL PRUSA MK4 General Troubleshooting
| CONF | DIAGNOSIS | PART MATCH | ACTION |
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91%
CONF
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MK4 Loadcell
The load cell is a strain gauge integrated into the Nextruder heatsink. A stuck reading of 100 indicates mechanical saturation, often caused by over-tightened mounting bolts creating a parasitic load that the sensor cannot tare. If the saturation persists after bolt adjustment, the strain gauge has likely suffered permanent deformation or an internal short.
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CHECK PRICE |
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5%
CONF
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LoveBoard
The LoveBoard serves as the primary breakout PCB for the extruder assembly. A failure in the analog-to-digital conversion circuit or a compromised connector header for the load cell cable can result in a high-voltage rail signal, which the firmware interprets as a maximum force (100) reading.
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CHECK PRICE |
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4%
CONF
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Loadcell-LoveBoard Cable
Intermittent or shorted wiring within the specialized load cell ribbon cable can cause signal noise or a hard-pull to the reference voltage. This prevents the printer from performing a successful tare operation during the startup self-test.
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CHECK PRICE |
DIY Repair Guide
Watch exactly how to replace the MK4 Loadcell.