Hi pPerez and thanks for your response. Good to know the end of your story and I am glad you found a solution. Seeing as my Canon printer has the exact same problem yours did, it looks like mine may be cooked too. If I can't pick up a secondhand main...
Hi, I have exactly the same issue as pPerez but with an MG7550. I have replaced the print head with a genuine Canon part but the pages come out blank. I have cleaned and deep cleaned the print head and replaced all of the ink cartrides with new ones ...