HP Smart Tank 510 Missing colors

[Yaso2]

My HP Smart Tank 510 has had poor printing quality: streaky, white lines and missing colors. I have re-filled all colour cartridges to full but when printing the diagnostic page, the blue and yellow bars are missing. I have tried replacing the printhead but it refuses to move to the middle. HP support says it will only do so when there's no errors, so I cannot even manually change the printhead. What's going on here?

[Nal_NR]

Hi @Yaso2,

Welcome to the HP Support Community. 

I'd like to help!

Perform the steps from this document and see how it goes.

You may also refer to this document if needed. 

Update the firmware

Hope this helps! Keep me posted for further assistance.
Please click “Accepted 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!

[Yaso2]

Hi @Elohi_NR,

Thank you for your reply! Unfortunately I have performed these steps many times beforehand but no success. My firmware is also up to date and all estimated supply levels are full. I have tried performing align printhead and clean printhead pages many times but there's still stripes and missing colors. As mentioned previously I am also unable to replace the printhead because my printer states it has no errors to require replacement, so the printhead won't move to the middle.

Here are scans of the latest diagnostic pages to give a better idea of the issue: 

[Nal_NR]

Hi @Yaso2 

We are sorry that the issue is not resolved when the above troubleshooting steps were performed.

This might require one on one interaction to fix the issue

I've sent you a private message with further instructions. In order to access your private messages, click the private message icon on the upper right corner of your HP Support Community profile, next to your profile Name or simply click on this link.

If the information I've provided was helpful, give us some reinforcement by clicking the Accepted Solution button, that'll help us and others see that we've got the answers!