L7680 will not do anything. the screen says printhead problem

I am assuming that you have installed the HP Solution Center software onto your PC. If not go online to hp.com, do a search for it, download and install it.
1. Open HP Solution Center
2. Click on Printer Toolbox
3. Click on Services (top)
4. Click on Clean the Printheads

I’m happy to help further over the phone at https://www.6ya.com/expert/james_16b2a71caf566999

Hi David,

Open the Front access door. You will find 2 Printheads. Check for an option on printer screen to Replace Printheads.

Remove the Printheads, Clean the contacts with lint free cloth ( golden electrical contacts )

Place the Printhead and close the Door.

This should fix the issue.

Regards,
Sean

Hi

You need to replace magenta and cyan printheads

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Have you tried to replace the black/yellow printhead? This is not the same as the ink cartridges, but it is located in the compartment under and to the right of the scanner lid.
Here is HP's link.
It looks like this...

Yes, you can pop the cover on the right over where the printhead parks, and remove the black/yellow printhead and soak it in about a 1/4 inch deep water for 30 mins or so, you only want the nozzle area on the bottom in the water. However if you are using generic inks it may report a printhead failure soon. After soaking you dab the bottom on a paper towel and look for a solid black line on the towel.

If you print primarily black, your black/yellow printhead may have worn out and needs to be replaced. Go to start, printers and faxes, select the L7680 and then select properties. Print a test page and run the troubleshooter to clean the nozzles and lines. If it's not the nozzles or lines, search for C9381A on google and purchase a new printhead it should be about $70.

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 If you are using OEM inks the printheads you are getting are out of date.

Hi,

Unfortunately it's highly likely that your black printhead is clogged due to the conditions you are using the printer in (ie: warm, dry, air-conditioned?).

I get this a lot in hot offices and school classrooms.

The only solution I've found that works long term is to use a dyebase black ink instead of the pigment ink that HP provide but this obviously means you would have to source a 3rd party ink supplier with ink of this type.

In the mean time a shorter term solution is to purchase a new black/yellow printhead and follow the process for changing the printhead for this new one.

Hope that helps.

Martin

Nope.

antiochpc may be correct but something worth trying first.

Open the printer lid and press OK for 5 seconds (as per screen instructions) to get the printer to put the printhead carriage unit in the replacement position.

Take the black and yellow printhead out of the carriage unit and check for any smear or soiling on the circuit board at the back of the printhead (don't touch the underside where the nozzles are!).

Using a cotton bud, carefully wipe off any ink or other moisture/grease, that may have built up.

Do the same to the back of the printhead slot circuit are but again, be careful and gentle.

Try slotting the printhead back into position, close the carriage unit blue lid and close the printer lid.

If it's worked you'll find the printer will run a self test routine and then return to normal operation.. If not, it's definitely replacement time.