The following printhead(s) has a problem Black/Yellow[K/Y].

More black/yellow print head failure we observed in this series, no remidy for this issue replace the print head..

Hello and welcome to FixYa!
In the HP OfficeJet Pro L7780 the printheads are actually separate from the ink cartridges. In your case, it sounds like the black/yellow head has worn out and will need to be replaced. The good news is, this is a user replaceable part. The bad news is, the replacement heads are not cheap. Amazon has the HP 88 Black/Yellow printhead listed currently for about $61.
http://www.amazon.com/HP-Yellow-Officejet-Printhead-Packaging/dp/B000BO9L8M/ref=dp_cp_ob_e_title_0
YouTube has a nice video that explains how to install the printheads here:
http://www.youtube.com/watch?v=8Zl0LUxBSvg
I hope this helps!

I have brand new print head and saids that there is a problem with the printer head and will not print nothing the black will not go to the print head need code to over ride and print something in black and white I've tried to shut it down and restarted for 30 sec. and for 15 min's did not work keeps coming up that there's a problem with the printer head model #C8187A-013 serial # MY76553H2 series Officejet Pro L7580 All-in-One email: [email protected]

Take it out and clean the contacts. Put it back in and see if the problem's gone. If not, buy new printhead.

take out printheads. unplugg power cable from back press adn hold down 6 and # buttons on pritner at same time while holding them down plugg it back in. then insert printheads one by one. first insert black/yellow shutt the door adn check for message on pritner screen. if it says printhead missing cyan/megenta it means it detected black/yellow printhead. do same with cyan/megenta adn check for message on screen. if you see no error mesage and both printheads were detected fine let the printheads alligned completely. then if u see same issue it is the pritner whgich need to be replaced.

take it out. Shake real hard over a sink. Worked with mine after spending 30 minutes with support...

follow the document
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01446637&tmp_task=solveCategory&lc=en&dlc=en&cc=us&product=2512009&lang=en

this is the best document that we can follow
other wise if your printer is in warranty call hp they will replace the printhead or the printer

You will have to reset the printer.If you want any further support, a technician from techbuddies can help you for free.For this log on to www.techbuddies.org

Re-insert the print cartridges. It is also possible that the heads are burnt. Get a new set of print heads (black/yellow) and install to the printer. If problem persists, clean the contacts on the printers. Use acetone + cotton swabs.

Simple solution is:

Replace the Black and Yellow Print Catridges. The print heads are mounted to the bottom of the catridges and these, depending on whther they're from HP or not. can have a hard time conducting electricity properly, and in turn.. spitting ink out properly.


Also happens often with aftermarket Catridges because HP puts chips on the catridge. be sure to put an HP catridge. Sometimes you get what you pay for :)