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Pixma Pro 100 not recognizing ink cartridges...any help or ideas?


My pixma pro 100 is not recognizing ink cartridges at all.  Hoping someone can give me something to try.  Message i get is "an ink tank cannot be recognized".  It wont recognize any of them.  For a few months, this happened every time i replaced ink, but turning it off and back on always fixed untill recently. 


The lights are all on when i open it, but if i take one ink out they all go off, seemingly till I turn it off and back on. 


Figured a longshot, but hoping for a miricle if anyone has advice or ran into this before. 

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