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Printhead problem Good Day, I have a HP OfficeJet Pro L7680 All-in-One that is displaying printhead problem with magenta/cyan printhead. This fault occurred immediately after a general power failure within the vicinity whilst the printer was powered up. I suspect that this is a board fault caused by the electrical problem however, it may not be and possibly there is another solution with which someone is familiar. If anyone out there could help me would appreciate it before calling an engineer. Thanking you, in anticipation. Freddie.

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Most likely your right but you can use the diagnostic test tool which is free from HP. This is the second one I have had and the first one was the print head burned out, however the guy was using after market ink and thats what caused it to short out the head. heres the site thats for free.
http://h10061.www1.hp.com/ccsearch/search?pname=HP+Officejet+Pro+L7680+All-in-One+Printer&opname=HP+Officejet+Pro+L7680+All-in-One+Printer&qry=cyan+print+head+error&method=prodFinder&enc=UTF-8&ctry=us&lang=en&dlc=en&sni=2512009&search=0&submit.x=0&submit.y=0

Posted on May 28, 2010

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Call the engineer. He/She will probably recommend that it is most cost-efficient to replace the printer, and responsibly recycle the old printer.

Posted on May 28, 2010

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1 Answer

Have a brand new printer not used till now, cyan/magenta printhead light and the light for the power bottom both flashes, and a message appears (printhead problem - the following printhead has a problem...


this sounds simular to the photosmart C7250 ink system failure. which cause by air in the lines. and we fix this by reseting the printer and it redoes the cartridge installation. thus pushing all the air out.

Dec 24, 2010 | HP OfficeJet Pro K8600 Printer

1 Answer

My out of warranty l7680 will not print or photocopy in colour. Printhead status says Refilled supply Detected in printhead Black No/Yellow Yes Magenta Yes/Cyan Yes Detected in Printer Black No/Yellow Yes...


The error states that you are using non-HP cartridges for all colours. If black prints fine then you should replace the colour cartridges with genuine HP colour carts. You should be able to get a refund on the refills since they clearly do not work as intended.

May 25, 2010 | HP Officejet Pro L7680 All-In-One Printer

1 Answer

Hi My hp printers gives me a message (printhead problem magenta/cyan[MC].do i need to replace or can it be fixed or seviced and what is the price of a new printhead


Hi

Before you change the printheads check if the backing plate where the printheads contact plates sits is cleaned and inside printer where it makes contact. Otherwise you will need to replace the MC printhead

Jan 28, 2010 | HP Officejet Pro L7680 All-In-One Printer

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

Printing yellow for black


Hi Jan,

Can you confirm that you are using a CIS or non-HP cartridges with this printer?

It sounds a lot like the printhead has reached a clogging point where sediment has built up in the black portion and loosens enough to printer a few lines before it re-asserts itself again.

Based on my experience of this printer, if you're using a non-HP delivery system for ink then you should consider replacing the black ink with a dyebase alternative instead of pigment.. Replacing the Black/Yellow printhead and running a number of test prints to purge the pigment ink in the printhead should then result in a clean and more reliable printout in future.

One other vector for problems is the cleaning area and I've found that this can become soiled with excess ink causing cross contamination within the inks of one printhead. As yet I've not found a reliable solution to counter this sort of issue.

Hope this gives some clues and hopefully some ideas of a fix.

Martin

May 24, 2009 | HP Officejet Pro L7680 All-In-One Printer

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