I was actually curious about this, I was wondering if perhaps different States might have different laws in regards to this. I know that recently Europe has introduced laws that prevent cartridge manufacturers from creating cartridges with "dead or kill switches" embedded in them. Hopefully we...
Sometime when the print head shorts out it cooks the main board with the printer. This might be the reason for the loss of power, unfortunately this results in a double whammy as both printer and head are pooched.
Possibly the print head has shorted out, I know that the colors are working but it is possible that the contacts for the black are done. I know the probability of knowing someone with the same printer is small but if you can find one (repair shop perhaps) try the print head inside their...