Question about HP Officejet Pro L7780 All-In-One InkJet Printer

3 Answers

Printhead Problems Can you make an HP L7780 print with only one of the printheads if it keeps saying the other one is bad while you're waiting on the replacement to arrive? I have replaced the magenta/cyan printhead twice in the last 3 months and it keeps going "bad". (I don't really think it's bad, but a partial reset of the system didn't fix the problem)

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  • coachcro May 17, 2008

    Window keeps saying printheads are not installed corretly.

  • Mas100 May 19, 2008

    in my hp officejet pro l7580 have change the black and yellow prithead 2 time in a week

  • JShrieve Jun 02, 2008

    L7780 keep replacing the magent/cyan prinhead and says there is a problem..

  • loreneruff Jul 18, 2008

    I have cleaned the printhead, replaced the print cartridges, still won't work because of "printhead error in yellow/black printhead"

  • mcoop Jul 31, 2008

    My Officejet Pro L7780 says that there is a printhead problem with black/yellow (k/y), and the printer will not let me do anything (clean, align) because I can't push setup or anything else. I ordered a new one, but is there another solution?

  • irobot69 Oct 13, 2008

    I sent back and received a new printer from HP, and the new one has the same problem. Black/Yellow printhead!!!

    Someone anyone please help.

  • Anonymous Oct 18, 2008


  • rdeck17 Oct 22, 2008

    I too am experiencing the error:

    "The following printhead(s) has a problem


    I've tried shaking the printhead and cleaning it, but the same error occurs.

  • Cognitor Jan 10, 2009

    The printer inexplicably decided that the m/c printhead was bad. No abuse. Less than 1 year old. Error has rendered printer inoperable. Replacement print head is 25% the cost of the ----- printer. That is BS!!

  • Anonymous Jan 12, 2009

    Sounds like a defect with these printers as I have the same problem with the magenta/yellow print head; "shaking it properly" did not solve the problem. Has anyone else found a solution?

  • Anonymous Feb 06, 2009

    Same deal here. The M/C printhead is the problem. So i take it out, clean it up and then the K/Y has a problem too. I have fooled with them, cleaning them and replacing them loads of times. They might work again for a few prints, but then the same problem reoccurs. SUPER ANNOYED!!!

  • CHUFFY2 Feb 16, 2009

    We are experiencing the same problem! Are there any new solutions out there or should we take the b... printer and throw it back at HP?

  • Torrap Feb 16, 2009

    I purchased a HP 7680 printer 15 months ago- three months out of warranty.

    I have been chatting with HP now for two weeks regarding a printhead problem/error I have had with the HP L7680- similar to all of your 7780s. They sent me new printheads only to find the problem still exists. Now they offer to "Upgrade" me to a L7780 machine with new warranty, cables, etc. for the "good" price of only $269.95. I have found this model online for $230.

    There are hundreds of posts I have found in only an hour's worth of searching re: HP L7680 printhead problems and now they offer to 'upgrade' me with a comparable faulty printer?

    Obviously HP has built and continues to sell a printer with known issues. I have own many, many HP products over the years and have never experienced problems like this, or more specifically, such poor and inept customer service. It would seem to me that a company with HP's stature would make an exception to their warranty policy for hardware with well-documented issues?

    Does anyone have any thoughts, comments or suggestions regarding similar experiences? Is there a consumer advocacy group or center that could be contacted?

    I would consider their 'upgrade' offer if it truely was an upgrade jesture, not just an attempt for the company to generate another retail sale- did I mention they suggested a 3-year extended warranty for only $44.95?

  • Anonymous Feb 18, 2009

    The M/C printhead failed on my L7780 printer also, I purchased a replacement with printed three pages and then likewise failed. The printer was less than one year old when the printhead failed I emailed a tech request to HP but never got a reply.

  • muttdc1 Apr 22, 2009

    Says my black/yellow printerhead has a problem and won't let me do anything with the printer. Just started today. Less than three months old!!!


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Since buying the L7780 printer for our business office two years ago, the printer has been a work horse for us. The problems I've seen online about scanning, paper jams and ink cartridge issues have been none existent. Then it was time to change the print head. The L7780 printed several pages before the print head error message appeared and the printer ceased printing. We tried all the solutions offered online including another print head and cartridges but to no avail. We were ready to buy a new printer. Then a member our team whom we dubbed “Service Tech 130” came up with the solution. Service Tech 130 simply pried the chips off both print heads with a screw driver and super glued the old chip onto the new print head. Now the printer has been working as if nothing was every wrong.
For this to work for those of you having the same problem, you would have to be in possession of the old print head that worked prior to the error. Attached is an image showing the location of the chip. Hope this works for you as it did for us.Printhead Problems - 9101d4c.gif

Posted on Mar 04, 2010

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What is the "proper" way to shake the printheads, silu_san?

Posted on Feb 22, 2010

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The only soution to this particular problem is to shake the printheads properly

Posted on Sep 28, 2008

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1 Answer

Missing lines when printing

This indicates clogged ink nozzles in the print head. You need to go start and programs, click on the HP toolkit for the L7780 and look for services, there you will find the clean printhead selection. Click this and let the printer complete this function, you may need to go through this several times to clean all of the nozzles. When it finishes try a test print and see what the quality looks like. If you are still having the missing stripes in the printout then you will need to replace the printheads. They are available online and changeout just like the ink cartridges do.

Jul 17, 2012 | HP Officejet Pro L7780 All-In-One InkJet...

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The printer is saying that the printheads need to be changed.It only did that after the power went out. Could you please tell me how i can fix this it is barely 2 years old.


if the printer was in print mode while power failure occured, it may electrically discharged the printheads. the printeheads have printed circuit board to activate and moderate amount of ink dispnsed.
you just well have to replace the printheads. But forst try cleaning the print ehads with cotton swab (no liquid, just cotton wipe). cleaning the printheads may resolve the issue, but chances are you will have to replace the printheads.

go to this site to discover issues that may help

hope this helps

Jul 09, 2011 | HP Officejet Pro L7780 All-In-One InkJet...

1 Answer

The following printhead has a problem black/yellow the printer will not print. These are new ink cartiladge

Hello and welcome to FixYa!
In the HP OfficeJet Pro L7780 the printheads are actually separate from the ink cartridges. In your case, it sounds like the black/yellow head has worn out and will need to be replaced. The good news is, this is a user replaceable part. The bad news is, the replacement heads are not cheap. Amazon has the HP 88 Black/Yellow printhead listed currently for about $61.
YouTube has a nice video that explains how to install the printheads here:
I hope this helps!

Mar 02, 2011 | HP Officejet Pro L7780 All-In-One InkJet...

1 Answer

Where to buy print heads for HP offficejet Pro L7780 all-in-One and how to install them?

For the printhead you can contact HP @ 1-800-474-6836. Note: if you are still in warranty you don't have to pay for the replacement, but if the printer is out of warranty charges my apply.
On how to install the printhead please follow this LINK (if you have further concern please do not hesitate to reply on this post)

Feb 17, 2011 | HP Officejet Pro L7780 All-In-One InkJet...

1 Answer

Saying printhead missing or damaged, new printhead recently fitted, sometimes removing replacing has restrated working but not this time

Remove the Printhead,
Clean the Printhead contacts ( electrical contacts on it )
Put them back in and follow the instructions on Printer screen

If the above step does not resolve
follow this document from HP website

Jun 23, 2010 | HP Officejet Pro L7780 All-In-One InkJet...

1 Answer

Officejet Pro L7650 black/yellow print head problem

There isn't a good fix for this problem. You can try the following;
1. Plug Unit Directly into wall, not thru a powerstrip.
2. Reset the Printer, Unplug Power Supply, Wait 30 Secs. Re-connect. Turn Power Back On.
3. Open Case, Wait for Printheads to move to right. Take Out Offending Printhead. Clean Gold Contacts / Soak Print Nozzles in 1/8" Water, if dried out. shake printhead to loosen stuck nozzles (watch out for flying ink!!). DO NOT PUT PRINTHEAD BACK IN YET!! Close Cover. Wait for printer to say "XXX Printhead is missing" Re-Open Cover, Wait till printheads move to right, Re-Insert Printhead, Close Cover. Reset if Necessary.
4. BTW None of this worked for me. I'm gonna see if anyone I know has one of these printers and swap out parts to see if it is indeed the printhead(s).
5. According to other posts, HP Service will tell you to try all of the above, then when it doesn't work, they tell you your printer is defective. Someone else mentioned a bad firmware problem. If you're out of warranty, your screwed. Another HP Horror Story! Oh My! California wants to elect their old CEO. lol.

Apr 12, 2010 | HP Officejet Pro L7680 All-In-One Printer

1 Answer

I have three HP L7780 printers that have bad print heads black/yellow. replaced but same problem. ?????

take out printheads. unplugg power cable from back press adn hold down 6 and # buttons on pritner at same time while holding them down plugg it back in. then insert printheads one by one. first insert black/yellow shutt the door adn check for message on pritner screen. if it says printhead missing cyan/megenta it means it detected black/yellow printhead. do same with cyan/megenta adn check for message on screen. if you see no error mesage and both printheads were detected fine let the printheads alligned completely. then if u see same issue it is the pritner whgich need to be replaced.

Dec 15, 2009 | HP Officejet Pro L7780 All-In-One InkJet...

1 Answer

L7780...had problems printing, took out the printhead to look at but now the printer says the printhead has a problem, help!!

check the lids from the printhead to the logic board. remove the ink and examine the nostril u could clean it with clean cloth soak in water. then if it persist replacement is best option

Aug 30, 2009 | HP Officejet Pro L7780 All-In-One InkJet...

1 Answer

How do i clean the printheads on a hp officejet

hp printers have a utility program that cleans and purges the printer heads. Go to HP on your startup menu and look through the options....mine is located in the "hp solutions center".

It has an option for purging the printer heads.

Jul 07, 2009 | HP Officejet Pro L7780 All-In-One InkJet...

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