Super team, very good assistance in troubleshooting: print head ordered for my printer - delivered quickly !!! But installed printhead problems did not work (known HP-problem). Call for help to printer heart ........ heart printer sends email several troubleshooting and behold the new printhead works. Class !!! Like the "old" and reinstalled. Now the prints again. And now kommt`s: Printers heart agrees to the "new" at a small discount to withdraw. Push-warm! Do sogst nothing more.