Most people around the world are not technologically savvy. They buy a printer and do not know much about printer ink cartridges or about troubleshooting problems that might appear. It is very important that every single printer owner out there reads articles like this one and that research as much information as possible about how to fix problems that appear. I say this because most problems can actually be fixed. You would lose a lot of money if you just buy a new cartridge every single time that something wrong happens.
Dirty Printhead
The dirty printhead can appear due to many different reasons and the fix is actually a lot simpler than what you might think. All that you need to do is use warm tap water. Run the printhead through it for a few minutes. After you are done, use a cloth to dry all the excess water that appears before you put the cartridge back in the printer. The ink that is dried in the nozzles can be dissolved. Such a fix should be considered whenever cartridges are removed from the printer and are exposed to air for too much time.