I had the same problem - ultimately I just put in a new one of the fat black cartridges and it fixed the problem. I think it was just a case of buying a bad set of the refills on eBay. If you don't have a refill handy, a temporary fix if you're deal...
I have the same problem - black won't print. I checked my black cartridge in a friend's printer (same exact printer) and it works fine. I tried head alignment, etc. any help? Len [MOD NOTE: Email address removed per FORUM GUIDELINES]
