HP Officejet Pro L7780 All-In-One InkJet Printer "printing yellow instead black" Questions

printing yellow for black Hi, ran the self test diagnostic, and everything looks good. Printhead status are good. underneath, where it lists refilled supply, it says detected in printhead black ...

...printing in yellow. Please help. Could have a corrupt driver. Disconnect the printer or at least be sure it is turned off. I'd do both and when the CD software program asks you to connect the printer ...

...printing ANYTHING black. I change the black cartridge twice.I cleaned the printer heads, aligned it and still it will no longer print anyhting in black. When I do a test print it comes out in RED ...

...yellow instead of black When I did the installation the yellow cartridge light was on at the end, which I think signifies no ink but I removed it and put it back in again and the light went off. ...

...instead of the pigment ink that HP provide but this obviously means you would have to source a 3rd party ink supplier with ink of this type. In the mean time a shorter term solution is to purchase a ...

...yellow & cyan/magenta. Tried all the power reset suggestions and was about to order new printheads when I tried a new twist on a combination I had seen in some previous blogs/forums. THE SOLUTION ...

...or yellow for red. Remember, faded images signal the need to change the toner; spotty printing signals the need to change the ink cartridge get more help for change cartridge . Hope this helps

printing on my HP officejet pro L7680 the printed sheets has lines across it and the text is missing from the lined area The HP88 printhead can dry out and cause clogging in the black part of the K/Y

...yellow & cyan/magenta. Tried all the power reset suggestions and was about to order new printheads when I tried a new twist on a combination I had seen in some previous blogs/forums. THE SOLUTION ...

...yellow streaks through the black? I have cleaned the printheads, realigned, calibrated, don't know what else to do. Clogged Inkjets? Could they be white Lines in your prints? Assuming your inkjet ...