Quote Originally Posted by Heber302 View Post
Luca72 you were RIGHT!

The doctor blade clog was causing the yellow streaks to appear on the prints. I follow your instructions put the PCU back into the machine ran solid yellow prints and they were perfect!
Thank you so much for sharing your expertise with me. I appreciate it a ton!

Have an awesome rest of the week.
I give you a suggestion to turn the developemer unit by hand, without breaking your fingers (especially in winter), you can recover one of these gears, from the drive unit of a scrapped machine, and keep it in the tool case...ciao

manual drive.jpg manual drive2.jpg