Printhead appears to be missing not detected or incorrectly installed

Peter I am sure this does not help you much, but I have the same issue on a T120 and have gone through the same things as you. 2 print heads, a new carriage assembly with associated cables. I checked all cables and contacts with a multimeter and cleaned them prior to these purchases. This is an expensive printer but I am about to throw in the towel and junk it. HP is less than forthcoming with any possible answers. I even asked what components could cause this failure mode. After hours of reading a technical manual I am no closer to the answer. The manual says nothing other than re-seating the print head, then replacing it.

Other than a main PCB which is also expensive, or maybe corrupt firmware I am at wits end. I have done troubleshooting and repair on CNC milling machines, Lasers and many other types of equipment. I have never hit the situation where a company would not try to help diagnose a piece of equipment. I find it very frustrating. I will post again if I find an answer.

Todd

That may be but mine did the same with OEM ink.

I have exactly the same problem on my HP 8620 . Also checked the contacts and so on. I think it is a software issue. The latest firmware update is probably incompatible or has a bug.

To verify this I want to go back to the former firmware version.

Does anybody know how to do this?

Exactly my story with an HP 8620. I’ve followed HP solutions (reseat and reset), I’ve cleaned contacts and … purchased a new printhead on EBay from China. No joy. One additional item — I happen to own two of these babies, one at home, one at the office. Can you guess? When I change the printheads, the good one works in either printer!

Now … I understand the view that third party ink breaks these printers. If so, shame on HP. I’m afraid I don’t buy the argument that a piece of hardware I own should be chained to an over-priced consumable. There should be some rights and decision left to the consumer, so I’m willing to protest if that’s the case.

And … the fact that the missing or undetected printhead error message follows the bad printhead isn’t evidence that this is caused by ink.

But in the end, I still have a printer that doesn’t work, one from a supposedly reputable manufacturer and not a cheap throwaway model either. I really don’t want to commit a needless environmental atrocity and send this thing to the landfill. (I’d also be less than responsible sending my car to the junkyard the next time it needs a windshield wiper!)

Come on HP!!

I have two 8620 printers with the same issue as well bought HP ink and at least 4 sets of non HP… A Waste of money for sure and a bunch of ink I can not use

I had the same problem with an HP8620 and, unfortunately, also still had a fair number of new HP ink cartridges. I have only used “original” HP ink - never others. I tried all of the various fixes but nothing helped. After looking at printer replacement options I decided to but a new original HP printhead (with a new set of starter cartridges) several months ago from a reliable seller on eBay and since then everything has been working great. The HP8620 has been a very good printer, so comparing the cost of the printhead (about $170) plus the value of my existing ink inventory was a better option than buying another printer. It’s really too bad that the printhead is just another expensive consumable. I just hope it lasts for a while!

HP officejet pro 8615 - I only used expensive HP ink... only guilty of ... not printing 1-2 weekly...

I am just tired of everything NOT lasting- crap products - ridiculous waste- disposable - GREED - defined perfectly - this seems to apply to everything from dishwashers to printers - use it too much wears it out, don't use it enough = clogged jets - seriously what a racket! Angry consumer... grouchy "old" lady (only 50)... lol - I will be looking into a different brand. No more HP for me.

Para mi claramente es un problema de software, la impresora es capaz de imprimir sin problema probando conectar y desconectar logre que me imprimiera una copia antes de volver a tener el mismo mensaje nefasto. algun genio de software que sea capaz de hah¡kear esa impresora?

Non OEM Ink ruins the printer period. Not even a new prinhead will save it. Throw the printer in the trash dumspter and go buy a new one and never use non OEM products or generic ink/toner EVER.

I've run into this same problem with an 8615. I've gone through the song and dance of reseating the printhead, cleaning the contacts, and I've only ever use HP Ink. Support is unresponsive.

What companies are you buying from to replace your $300 paperweights?

HP 8725. always use HP ink, Print head disappeared is the error and looks like here to stay. Realize the numbers is what these companies look for. If the bad ones are lower than selling new ones, they won't fix the problem AND most people will just buy another HP. I've been using HP for years but seems they fail on some insignificant issue or a small gear breaks. This one lasted 5 years so guess what..... time to buy another. How it goes is how it is and won't change. Loss of big money is what changes the score. They are the greedy element in the world like cockroaches and will stay that way. Good luck.