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Need Help FB550 Magenta Dropout every morning

Discussion in 'Hewlett Packard' started by Charles@TheSignDude, Nov 21, 2019.

  1. Charles@TheSignDude

    Charles@TheSignDude Member

    Jan 3, 2019
    Every morning after our FB550 has been setting all night, the first print of the morning about 6-8 inches in the magenta drops out. After a jet health check and 2-3 standard air purges it usually comes back. We have checked the Thermisters for buildup or defects and all looks good. Any other suggestions on a fix?


    Attached Files:

  2. Boudica

    Boudica Active Member

    Dec 21, 2018
    Spokane, WA
    You may have an "under-performing" box of ink - there are a lot of them out there. Just black and magenta that I'm aware of. We've had the pains of each. Get in touch with your vendor to see if they will replace it. If you are still under warranty, you may be able to get one from HP support
    • Agree Agree x 1
  3. signman315

    signman315 Signmaker

    Oct 5, 2015
    Leonardsville, NY
    Boudica nailed it. Just went through this myself last week. "under-performing" box of Magenta. In my conversation with HP they made a good point....look closely at your prime bars. "under-performing" ink will jet weak at the leading/trailing edges. Very similar to the older scitex line that used to experience weak center jetting (which was generally a bad head on those machines), but in this case it's the opposite, weak edge jetting as opposed to the center being weak. Weak edge jetting is a sign of "under-performing" ink. At first glance my prime bars appeared perfect but upon closer inspection I was getting weak edge jetting and it turned out to be a bad, excuse me, an "under-performing" Magenta cartridge. Also shake your cartridges, HP suggested shaking weekly on Monday morning, but we are going a step further and shaking every morning. So far so good. Hope it helps!
    • Agree Agree x 3

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