06-26-2014 05:21 AM
I tried cleaning the old print head (no luck)
Replaced Printhead (new one)
still no black
Tried firmware update (no luck)
anyone a last idea ?
All original cartridges.. and the top part on the cartridge has been removed
06-26-2014 05:53 AM
Please go ahead and perform the solution 3 and 4 from the document below (link).
07-03-2014 10:57 AM
If cleaning / replacing the printhead, following the suggested guide have failed to resolve the issues I would suggest contacting HP's Technical Support to see about further options for you.
If you are calling within North America, the number is 1-800-474-6836 and for all other regions, click here.