PIXMA PRO-10 Clogged PBK

[Megastrik3]

Hi everyone! I have a Canon Pro-10 that is giving me a hard time with a clog in the PBK color. What's happening is when I print a nozzle check, the PBK block prints a line at the top, and a line at the bottom, but the middle is blank. The weird part is, if I run a deep clean, the first print afterwards is oftentimes perfect, but if I do another nozzle check immediately afterwards, it goes back to only printing the top and the bottom.
What I've tried:

- I've soaked the print head in distilled water and isopropyl alcohol for 24 hours.
- I've also done multiple 8 hour Windex paper towel soaks.

I've had the most success with the Windex method (initially there was no PBK, but after two soaks it came back). I'm not sure if I should continue doing the Windex method and just be patient with the results, or if there is another approach I should use. I've been slowly working on restoring this print head over the last month, so I'm in no particular hurry to get it working. I feel that I am very close, just missing something.

Thank you for your help!

(Here are the photos of what I'm dealing with)

[Patrick]

Hi Megastrik3,

It would appear that your PRO-10 would require service.  If your PRO-10 was purchased less than a year ago, please contact one of Canon's Technical Support Representatives via phone or chat to obtain your in warranty options. To contact a Technical Support Representative, please use the link below to log into your My Canon account:

https://mycanon.usa.canon.com

Once logged in, click on your PRO-10 and then click on the Product Support button.  When that page loads, click on either the Phone Support button or the Chat Support button to access support.

If your PRO-10 is out of warranty, you are eligible for Canon's Upgrade Program. This is for out of warranty units which have been diagnosed to require service, or for some reason are incompatible with a new or upgraded system. This option allows you a one-time opportunity to purchase a replacement product, discounted from the list price.

If you would like to take part in this option, please call our Sales Department at (866) 443-8002 Monday through Saturday, 9am to 9pm. Let them know you have been working with technical support and the Canon Upgrade Program was offered.

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