Hi, I recently finished my mendel90 and was too lazy to setup the heated bed until recently. I finally got it all going however when I send the command to heat it there is no 12v going to the D8 output. The heated bed thermistor is giving a correct reading, the heater itself is measuring proper resistance, just no 12v. I suspect some pin assignment issues, no idea how I would fix that in Marlin. I also checked for bad soldering points but it all looks good. Fuses are not the problem because the heater has never been used yet. Open to any suggestions thanks.
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