been bringing my printer back to life with some success as follows:
last time, last year, removed carts, shaken a bit, and all but three had to be replaced with new as the chips would not read and replacing with new chips was not working because the little plastic nubbins locating he chips were swollen.
now, six or 8 months later, tried to resurrect after a major hiatus; bad nozzle print (7 not visible); did a couple of power cleans, got better, made a print, but it was not right, so again, removed carts, shaken, re-installed, ran test print, not much better. part way through power clean, got bad cart warning; so put in a new one, alerted the printer to non-standard cart, ran power clean, test print, several times, now nozzle 7 is good but 4 is bad. figured i had a bubble in 4 (the new cart, primed of course), tried another power clean, said not enough ink, so used the chip resetter on all carts (they have plenty of ink) test, another power clean, now getting main tank full msg.
so i can get another tank; but is there a way to dump the contents of the tank, put in the paper towels and rest the tank chip?
i probably blew through a considerable volume of ink, but so be it. did not like the fact i had to get new carts, but the newer ones seem to survive being pulled and shaken.
also, some of the nozzle patterns are quite light, due to the lighter ink color, of course, and that misled me for a bit (se. gloss optimizer