Officejet 6500 not printing black after new cartridge installed

[DavySteel]

HP 6500 e709n printer stopped printing black. Prints colors fine

-Replaced black cartage HP brand

-No black on test page or document from LapTop

-Cleaned print head with warm water and dried

- No black

-Still prints color

-Power switch OFF, wait 20 sec, ON

-No black

-Disconnect Power supply, wait 20 sec, reconnect

- No black

-Reinstalled old black ink cartridge

-No Black on test page or document from laptop

-Reinstall new/full black ink cartridge

-No black

- Download new drivers to LapTop

-No black, still prints color fine

-Switch from Plain paper to HP premium Photo Paper

- YES, YES prints black and color

-Return setting to plain paper

- No black

Any suggestions?

This printer does many things well. 

Do not want to scrap it.

Thanks, DavySteel

[Bob_Headrick]

The black ink is pigmented and not compatible with photo paper.  When you select photo paper in the driver (or the printer detects photo paper if type set to automatic in driver) the printer will mix color inks to provide color.  While it appears black is printing, it is not.

The troubleshooting steps in the document here may help resolve black not printing on your Officejet 6500 e709n.  I am not sure from your description if you have checked the vents and if you soaked the printhead in hot water.  I would suggest going through the steps in order, up through step 15 or until the issue is resolved.

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.  

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