Black ink not working.

[HIPATROL]

I have an HP Photosmart 7510 not having been used for years and barely before. With a new HP black cartridge has worked OK only 1 day! Just before the same happened with my Photosmart 6520 being used for 6 years without any problem of the kind.

I have been told that it is due to the printing head.It can be changed on the 7510 only. Can I get the exact reference, eventually the price and the how to do it?

Before I could try to dismount it and clean the printing contacts in a plate with warmish water...

an you confirm with details?

By the way the devices operate all right for everything else so it would be ridiculous to have to drop them in the waste, not good at all for the planet neither for HP .

Thank you

Thank you

[Bob_Headrick]

The troubleshooting steps in the document here may help resolve black not printing on your Photosmart 7150.  I would suggest going through the steps in order as it is likely the issue can be resolved without replacing the printhead.  Steps 7 and 8 show how to remove the printhead for this model and soak it but please do the proceeding steps first.

The following relates to the Photosmart 6520 which has a permanent printhead. While you may find instructions online for removing the printhead of the 6520 to manually soak it I would not recommend that.  I have seen many attempts but few successes removing the printhead as it was not designed to be removable.

The troubleshooting steps in the document here may help resolve black not printing on your Photosmart 6520.

If the standard troubleshooting did not resolve black not printing I would suggest removing the black cartridge.  Turn it over and examine the area around the ink port.  There are four orange plastic spots, left over from the protective cap.  Make sure these are flush with the cartridge body, if not carefully trim them flush.  If the plastic nubs protrude they can prevent the cartridge from seating properly.  Before replacing the cartridge in the printer dribble a few (maybe four) drops of hot water into the ink port in the printer and two drops into the ink port on the cartridge then snap the cartridge back in position.  

It may also help to manually clean the printhead as described in the post here.

I have also seen cases where leaving the printer overnight after the cleaning cycles allows black to recover.

If none of the above restores black printing your printer will likely require repair or replacement.