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Check out our Black or Color Ink Not Printing, Other Print Quality Issues info about: Print quality and Cartridge Issues.
HP Recommended
macOS 10.15 Catalina

I was getting lots of stripes on any print job that included blue. I cleaned the printer heads and I no longer get blue at all. The cartridges are original and supplied direct from HP. I have tried everything and used lots of paper in the trying. I would love to hear of any other tricks I can try or should I just buy a new machine?

2 REPLIES 2
HP Recommended

I have an HP OfficeJet Pro 6975. Installed are new HP902XL color and black cartridges. The cyan ink cartridge, although full, was not printing. I cycled printer on/off and when rebooting it made loud clunking noises and the cyan ink started working. Days later, new/full magenta ink cartridge stopped working. I have run all reports, cleaned and aligned, and restored. Please advise.

HP Recommended

I just followed HP instructions from post 

 
Feb 19, 2021
 
and it worked!
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