I bought one of these last year that had been sitting for two years on first or second set of inks. The Dampers that go into he print head where the problem. At least the magenta was fully clogged. I bought bulk system that came with cleaning product and ran the different settings to flush out the lines, still did not clear our the damper, I had to pull it off and use a sering on both sides sucking and pulling until it broke free. (if i had a new damper on hand that day I would have just used it)
Michael V, April 2009