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Run head cleaning and deep head cleaning for few times. If it doesnt help, you can try to remove print head, and clean the nozzles with distiled water. And after that also run few times head cleaning mode.
check the cartridge contacts in the printer \
a lot of time they geet covered in ink this will not allow the cartridge to print properly and cause headaches
clean with a baby wipe or a paper towel with soap on it
dry thuoly with hair dryer and try again
Assuming genuine ink cartThis worked for me on a HP printer
1.Try print black text ,and run many copies black only. I ran 25x12 times still no black. Run head clean after about each 50 sheets. Persevered and finally BLACK ink OK
Good Luck Inkypete
microsoft logo is in colour and so its printing while everything else on test page is black so its not printing.
the problem is common.you need to do automatic deep cleaning for the ink flow to start once you install new cartridges.go to printer maintanance option and click the option deep cleaning .it will pull out the ink in printer head and it will start working.sometimes also requires cleaning twice.
thanks and do not forget to accept the solution.
hi... it might be that you need some time to let the ink absorb into the pads in the print heads ... this can take between a few hours and a day... Must be frustrating to deep clean three times and just seem that you are wasting ink cartridges, my "solution" would be to give it time or possibly clean the print heads manually.. hope it will solve it out..
I'm not an expert but I go through a lot of ink.. I have found that even with new ink some of the tanks of ink aren't any good especially with compatible which i buy a lot of because it's a lot cheaper (ebay). With that ink I have gone through 10 cartridges in a row before finding one that worked correctly again (I mean out of 100+ cartridges hitting a run of 10 that where bad but the rest good.)
Also, a tech for epson once told me to hit deep clean 7 times in a row before a head check to clean their nozzles.. That has helped with my printer and at Fry's electronics, they have a cleaning solvent in kit, haven't tried it, but i have run alcohol through mine but I'm told that is very ******* the print head (dissolves the glue).
open your list of printers. r/click on the 780 and open properties. fo to the last tab "maintenance" and run cleaning 2 or 3 times then run deep cleaning 2 or 3 times. and see how this helps. If you've never done it before you might want to take out the print head and clean it with alcohol. Take out all the ink like you were changing them then reach in and gently pull out the container that holds the ink. This is the print head. Clean it and replace it, then run clean and deep clean again. run Nozzle check to see how clean it's become and you'll definetly see a difference in your printing.