Fax and scanner are working fine - except printer. Recently the problems started with getting a single magenta line per head movement even if I print only black and white. This is not caused by a blocked jet, it is rater a faulty print head that has...

I was convinced to purchase this printer because of positive reviews, inc. Choice magazine's. I regret that now. As soon as I saw it, I was concerned about the build design and quality, esp. in relation to the bits that moved eg the feed mechanisms....