Question about HP Officejet Pro L7680 All-In-One Printer

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Black Yellow Print head

I have replaced the print head twice in 4 months, and now the printer screen says there is a problem and goes no further.

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Those are expensive printheads too, usually when that keeps happening it's because you are using generic ink and not HP, if that's the case you need to flush out the heads with water, replace the inks with OEM and you may need to flush the printheads again. If you are using OEM inks the printheads you are getting are out of date.

Posted on Sep 10, 2009

Testimonial: "Great, thanks for the info... wish I knew about the after market ink before I ordered it."


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You must replace the print head., as long as printer detecting that nozzles are not firing properly., it keep on cleaning the head, result it will drains the inks from the ink tanks...once you replaced both print head & tanks, take print outs at least twice in a week., perform nozzle cleaning once in a month to avoid this type of nonsense..

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Perform "clean print heads" in printer properties select printing preferences,service then click clean nozzles, perform twice or thrice then do the nozzle test, if print heads are recovered your will be in safe, other wise***Two print heads are in this printer each print head leads two colors, left print head leads black & yellow and other one leads cyan & magenta. You need to replace the print heads based on the color which missed.

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My HP 6500 only prints yellow and black. I refilled all three color cartridges and only the yellow is working. Any ideas?

This printer having four cartridges and two print heads.Each print head having two pens, black, yellow & magenta,cyan. As you said yellow & black are OK.. So replace Magenta & Cyan print head..

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The printer is not printing, ink is new

Ink means cartridges? but what about print heads?..go to tool box perform clean nozzles, check if not satisfied do this process twice or thrice. check print quality if you found yellow or black missed replace left print head, magenta or cyan missed replace right print head.. part number on print heads..

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I bought and replaced the black and yellow printhead today. It printed some colored pages. Then when I began to print this evening a colored page. It stopped in the middle of printing and the printer...

please take your print head and get it tested or get it replaced, or you could take your printer to a local HP service centre and get it checked, rather than trying to fix it yourself you mite damage the sensors for the print head.

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I have an Epson NX400 printer but the yellow and black ink test pages are showing gaps and missing lines. I replaced both ink cartidges twice and did the head cleaning and nozzle check but nothing seems to...

Try to print something that is pure yellow and pure black. Set it to BEST PHOTO. If you see gaps or missing lines, your print head could be clogged. You will need to use a cleaning solution to remove the clog.

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did you make sure you took the little plastic sticker off the ink cartridge believe it or not alot of people forget it is on there

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Contact Kodak with your problem. The problem is in the print head. Kodak will send you a new print head free, then follow the instructions that are inclosed to change the print head. DO NOT TRY TO CHANGE IT WITHOUT READING THE INSTRUCTIONS. You may damage the new head and they will not replace it a second time for free.

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Only black prints

It will only get worse. Do a google search and you will find out the print head is defective. After a multitude of complains, Brother has a more reliable print head for a fix. I'm not fixing mine. I've already invested too much in ink because of the auto cleaning it is programmed to perform.
A built in print head vs. a printer that has the ink tank and print head combined sounds like a good idea. The ink tanks are cheaper because they don't have the electronics built in and you only replace one color at a time. The problem is the print head clogs after several ink tanks have gone through them. Now, instead of paying $40 for a new ink cartridge with built in print head, you are paying for the ink that is wasted by all the required automatic cleanings, and eventually taking the printer to the repair shop for a new print head (parts and labor average $150) that may fail at any time.
My advice is to avoid any further headaches and buy a HP. Don't rely on good reviews, Consumer Reports rated this model a best buy.

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