JIM HOLSONBACK wrote in a message to ALL:

 JH> Hello, ALL.

 JH> I have this right nice HP Desjet 890C Professional Series inkjet
 JH> printer.  All colors and the black were working perfectly when I
 JH> stopped using it maybe 4-6 months ago.  Now, black and two colors
 JH> are dead, and all I have is Magenta.

 JH> I tried the Windows software maintenance steps of clean print head,
 JH> and prime print head, but still only Magenta is working.  Last time
 JH> this happened, was with black only, and I soaked the thing in
 JH> distilled water for several hours and then retried the cleaning and
 JH> priming, and that didn't work back then.

That seems to assume that water is the solvent for those.  I'm wondering
what other solvent there would be that'd work...

 JH> So my current black cartridge is about new, with plenty ink still 
 JH> in it.  Shake-shake -- yes, I can hear ink sloshing around in 
 JH> there.

Hm.

 JH> Anyone here have any experience with bringing dried-up HP ink
 JH> cartridges back to life?

I will be looking forward to seeing what other answers you get to this.

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