Cyan stopped printing

[CramRenraff]

HP OfficePro 6978

We recently replaced our cartridges. The black, magenta and yellow are working fine but the cyan is not printing. We are not getting any error message; the printer thinks the cartridge is fine. Nonetheless, I changed it for another new one. It doesn't print either. Tried the hard reboot method but that didn't help.

[Jay_G24]

Hi @CramRenraff,

If you have already performed the steps from the document Black or Color Ink Not Printing, Other Print Quality Issues and the issue persists, it could be a hardware failure.

Please reach out to the HP Support in your region regarding the service options for your printer.

If you are having trouble navigating through the above options, it's most likely because the device is out of warranty. If yes? please send me a private message with the region you are contacting us from. Check next to your profile Name, you should see a little blue envelope, please click on it. 

Hope this helps!

And, Welcome to the HP Support Community. 

Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.

Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping

[CramRenraff]

No, none of those steps resolved our issue...at least not right away. Mysteriously, the cyan started working again a couple of days after I posted my question. We are good.