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

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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

    same

  • rdeck17 Oct 22, 2008

    I too am experiencing the error:



    "The following printhead(s) has a problem

    black/yello(k,y)"



    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

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.
http://www.amazon.com/HP-Yellow-Officejet-Printhead-Packaging/dp/B000BO9L8M/ref=dp_cp_ob_e_title_0
YouTube has a nice video that explains how to install the printheads here:
http://www.youtube.com/watch?v=8Zl0LUxBSvg
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
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01446637&cc=us&lc=en&dlc=en&product=2512010

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

My HP Officejet Pro L7780 All-In-One InkJet Printer was jammed with paper. I believe I got it all out and now the display reads" Printhead problem- the following printhead has a problem: magenta/cyan...


There are two possibilities here Joanne, first, it could be a false error message or else second, the Cyan/Magenta print head has gone bad.Try the following:
1. Take the Cyan/Magenta printhead out. Remember, the printhead...not the cartridges.
Clean the copper contacts with a Q Tip, moistened with plain water. Wait till it dries, put the printhead back in.
2. If this does not resolve the issue, unplug the power cord from the back and press and hold the power cord for 30 sec. This will drain all the static charges. Plug it back after a couple of minutes and see if the error message re appears.

Jul 02, 2009 | HP Officejet Pro L7780 All-In-One InkJet...

1 Answer

Black ink problem with printout on hp7780


Always try replacing the ink cartridges first.

It sounds like the print heads in the 7780 are bad. Don't confuse the ink cartridges with print heads. The cartridges fit inside the print heads. You will need to change the heads. Here is a link to HP's how-to.
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00841890&tmp_track_link=ot_faqs/top_issues/en_us/c00841890/loc:1&lc=en&dlc=en&cc=us&lang=en&product=2512010

Could have the same problem with the Dell.

Jun 01, 2009 | HP Officejet Pro L7780 All-In-One InkJet...

1 Answer

Printhead problems


Hi,

It's likely that your printheads have just been knocked about a bit when you cleared the jam and all you need to do is to remove and then reseat them again properly...

Try this:
  • Open the main printer lid (not the scanner) :-)
  • wait for the printer LED to show the message about replacing printheads
  • Press and hold the OK button for 5+ seconds.
  • Wait for the printheads to move into the replacement position and wait 5 seconds more to be sure the printer isn't messing with you as sometimes it likes to move a bit more before it settles.
  • Lift the blue lid clear
  • Remove the printheads one at a time and check for any ink smear on the back part where a circuit board sits... This may need some gentle cleaning with a cotton bud
  • Check the contact circuit board in the actual printhead carriage (the bit where the printheads actually sit normally) and clean these with a cotton bud if these have become soiled
  • Replace the printheads in the correct slots and carefully push them into position
  • Close the blue lid and then close the printer lid
If the printheads are ok you should find that this will solve the problem and re-establish connection with the printer, cancelling the error. If not, it's possible the printhead is damaged but I'd give HP support a call first and request a replacement if you can (check the warranty on the printhead - they have this printed on them).

Hope this helps.

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

1 Answer

HP D135 - replaced printhead - still doesn't print in that color


try this link : I followed the directions and fixed the problem. the instructions that came with the new printhead weren't really complete.

Here's essentially all I did for my fix - Opened the printer top, turned the printer off. Removed the "bad" printhead, cleaned the metal contacts on the printhead and printer with windex. Closed the printer. Turned it on. waited for it to reset. Opened the printer. Turned the printer off again. Installed the printhead. Closed the lid. Plugged the printer in again. When it was ready I accessed the HP toolbox and alligned the printheads and cleaned the printheads. It worked. Here's a link with photos.


http://h10025.www1.hp.com/ewfrf/wc/document?docname=bpa02107&lc=en&cc=ca&dlc=&product=64986

Oct 18, 2008 | HP OfficeJet D135 All-In-One InkJet...

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