Hi
Good Day. Thanks for visiting the HP community. I reviewed the post regarding issues with Ink system failure errors.Superb troubleshooting and splendid description of the issue before posting. Hats off to you on that score. 
For better clarity and to assist you better I would require more information regarding this:
- Did this happen after a recent power outage or surge?
It looks like the printer is nearing its End of life and the issue seems to be hardware related. I am being honest about it without beating around the bush by keeping your best interest in mind.
For now please try these steps:
- Please try all the prescribed steps from this link: http://hp.care/2tQZxqa
- and check if it resolves the issue. Going by your profound technical wisdom and expertise I am sure you’ve done it all.
- If the problem persists, please contact HP phone support to get the printer replaced or upgraded.
HP Technical Support can be reached by clicking on the following link: http://hp.care/2r9wSvP
- Once the support page opens please select the country in which you're located. Next, enter your HP model number on the right.
- Next, choose the 'Contact Support' tab at the top and scroll down to the bottom of the 'HP Support- Contact' page to fill out the form provided with your contact information.
- Once completed click the 'Show Options' icon on the bottom right.
- Lastly, scroll down to the bottom of the page and select 'Get phone number.' A case number and phone number will now populate for you.
They will be happy to assist you immediately.
If the unit is under warranty, the manufacturer’s warranty should take care of it for you.
If you want a new printer with a year’s warranty, then please contact HP shopping via this link: http://hp.care/2rQLe1b to buy a new printer.
Please perform all these steps patiently as it is critical to resolving the issue. The trick is to remain patient, Going by your technical expertise and competence I am sure you will be able to perform these steps without breaking a sweat.
Hope this helps. Let me know how it goes.
To simply say thanks, please click the "Thumbs Up"button to give me a Kudos to appreciate my efforts to help. If this helps, please mark this as “Accepted Solution”as it will help several others with the same issue to get it resolved without hassles.
Take care and have a blessed week ahead.
Cheers!