HP Officejet Pro L7780 black ink don't print, color fine printing

My HP Officejet Pro L7780 is not printing black ink.  He began to 'jump' then it completely stopped printing black.  I have replaced the black today cartridge, cleaned the printheads several times and always, it prints a slight shadow or nothing at all.  Any help would be greatly appreciated!  Thank you!

Hey TC,.

There are several troubleshooting steps that may help solve this problem. Symptoms could include striations or discolouration, lack of black or other colors, text Blur/Blur, and the ink bleed. Please click the link below for detailed instructions:

Troubleshooting print quality problems

Tags: HP Printers

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