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Nathan, Engineer
Category: Printers
Satisfied Customers: 29532
Experience:  Computer networking/repair. 20+ years experience printer repair
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I have an MG7750 Canon printer. It was printing well until I

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I have an MG7750 Canon printer. It was printing well until I went away for about 4 weeks. On my return it prints colour alright but not black. I have "cleaned" and "deep cleaned" several times without the problem being resolved but now I have much less ink. I tried changing the black cartridge but there was no improvement. Any suggestions?

Hi, I'm Nathan.
Sorry to hear that you're having trouble with this but I'll do my best to help you.

Hello Peter,

These symptoms point to either a clogged/contaminated print head, or a faulty print head (or the logic board that controls it). This is a result of sitting idle for so long, which inkjet printers cannot tolerate - if they go more than about a week without use, the nozzles start to dry out and clog up, then when you try to print again, they can overheat and become permanently damaged.

A few cleans are not enough. You can try, again, going into the setup/maintenance menu on the machine and running the “clean print head” function repeatedly, up to 10 times total, testing after each.

If it still doesn’t print anything, you’ll need to do a manual cleaning as a next step.

I have to caution you up front though that the manual cleaning process is messy and time consuming. It also has a low chance of success, if you see no improvement at all from the automated cleaning. It is most likely a hardware failure (bad head) which the cleaning can’t fix, as printheads are a wear item and do fail with time/use.

Realistically, it’s probably time for a new printer. As this is a 2015 model printer, it is well into if not past its designed maximum 3 year service life, so this type of failure is not surprising. While it can be fixed, it is not worthwhile to do so. You would have to, at a minimum, replace the printhead, which costs about $85; if the logic board is bad you’re looking at $200-250. For $80-100 you can replace the entire machine with a brand new model, with current technology and a fresh warranty, which makes more sense than buying the new part for an older printer.

That said, it doesn’t hurt to try, if you wish. Let me know how the built in cleaning function works, and I’ll guide you through the manual steps next, or I can recommend replacement options if you prefer.

Best regards, ***** ***** for the news,


Nathan and other Printers Specialists are ready to help you
Customer: replied 4 months ago.
If I have to replace the printer are you able to help the decision as to which one? I am an amateur photographer who like to print photos as well as needing a printer for my consultancy business.
Thanks Peter

Yes certainly,

If looking for a replacement, I’d recommend any of the Epson workforce series printers. They tend to be very reliable, are easy to set up and use, have good print quality, and reasonably priced ink. Example: or

Note that these, like all consumer grade inkjet printers, are designed to be low cost and are essentially disposable after a few years, subsidized by the high cost of ink cartridges. If you wish to have a better quality and longer lasting printer, that comes with years worth of ink up front, consider the Epson ecotank models instead:

Alternately, for a more business/commercial grade product that will be rated for a 5 year life, consider a laser printer. Lasers cost more up front also, but a toner cartridge can last for thousands of pages. A black only all in one laser is around $125:

while a color model is about twice that:

Customer: replied 4 months ago.
Thank you. Which of the models you suggest are able to give photo quality prints?

If you are needing more for photos, their expression series is a better option:

Customer: replied 4 months ago.
Many thanks this sounds like the one. I assume that it performs well for documents also?

Yes it will do fine for documents also.

Customer: replied 4 months ago.
Thank you Nathan. I have now bought one via Amazon

You're very welcome!