Some colours not printing

Hi there, My printer is not printing all colours. I've done numerous nozzle checks with the result that all colours print apart from yellow and the top black cartridge. I've done the clean, and deep clean process as recommended in the user manual many times but it hasn't cleared. The cartridges are full and my last successful full colour print was just last week. Any ideas gratefully received. Many thanks Judy

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Are you taking ink out while you are doing the cleaning.

Posted on Aug 14, 2007

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I bet you are using non genuine ink, the MP780 will not put up with that ink, you will need a new printhead and maybe a purge unit. Take the machine to your ink supplier and get him to fix it as he supplied the ink

Posted on May 20, 2007

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