Question about HP Deskjet 6940 InkJet Printer

2 Answers


My HP Deskjet 6940 ran out of ink and I replaced it, like normal, and it still won't print. I've tried everything I could think of. Please help.


  • 7 more comments 
  • Anonymous Nov 13, 2007

    I changed the cartridge but it still shows the ink light flashing and won't print

  • Anonymous Jan 19, 2008

    Same here, filled both cartridges, bought original new ones, but still the right one is flshing. Will try the alcohol now

  • hulksmash Feb 05, 2008

    I am having the same problem, cleaned and replaced the color cartridge on my 6940 and the printer won't detect the cartridge. I am not sure what else to try.

  • djancak Apr 24, 2008

    Mateo6940's response for my situation. I removed the cartridge and there was a big gash in the circuits. I now print with only one ink cartridge.

  • Anonymous Jul 29, 2008

    printer doesnt work

  • brenny1 Aug 07, 2008

    I've replaced the ink but lights are flashing on the printer and nothing is printing

  • slmoon Sep 04, 2008

    I had a HP Deskjet and really liked it, but when I replaced the black
    ink...the message: problem with cartridege showed up. It
    never worked again. I bought another one and the VERY first time
    that I tried to replace the color print cartridge...the same thing
    happened. I was SO careful removing the old one and replacing the
    new cartridge!!!!!

  • Anonymous Sep 09, 2008

    had many problems with HP 6940 but last one is that it won't acknowledge new color ink cartridges. Now determined that I can't print anything in color & will have to replace the printer, which is only 2 years old. Very poor design and not reliable printer for office format.The ink plate in the printer has been damaged even though care was taken when replacing new cartridges.

  • Anonymous Mar 18, 2014

    how do i remove latch lock from my HP deskjet 6940 to replace my cartridge?



2 Answers


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Due to shiaty design, it is easy to accidentaly puncture the printed circuit with the sharp end of the retention spring while inserting a new cartridge. Use a flashlight too look at the white/copper sheet the cartridge makes contact with and look for a puncture (probably near the lower right side.)

Posted on Apr 13, 2008



  • Level 1:

    An expert who has achieved level 1.

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  • 2 Answers

Alcohol swab on the connection for the cartridge.

Posted on Dec 22, 2007


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