04-03-2014 09:20 AM
04-18-2014 11:54 AM
Thank you so much. I had this identical thing happen today and your answer to the problem solved mine.
I've had this printer for 2 years and this is the first time I had this happen.
04-18-2014 03:43 PM
Update to my HP 7510 not printing in black. As I expected it was a connection problem to the print head. I had a couple old print heads so I kept changing, including a new one, cleaning contacts and no luck. So I called HP, told them I went through all the references and cleaning and no luck so it must be a hardware problem. Since it was out of warranty, they didn't want to bother anyway, but asked if I could buy a "reconditioned" model. They had a HP7520, one model newer than mine for $120, and for $10 more they'd give me a 2 year warranty. I check with Best Buy and they were selling the HP7520 for just over $160. "Reconditioned" doesn't necessarily mean used, but may a returned model, and all parts are checked out and replaced. So I figured an extra year warranty and near new, it was a good deal. Didn't even require me to send old one back like warranty replacements and upgrades are required. They did require I prove the cartridges were HP and not refilled, like that matters.
So right after I got it, for grins I switched the print head (the tray that holds the cartridges) back to the old one, and whala! It started working. So it was a connection problem some where. I knew it was because black and all other colors were working and suddenly no black. So if the black stops, and the pad on the cartridge is wet and full. It's probably a connection problem. Hope this helps.
04-18-2014 04:31 PM
So, it appears that there are several ways to solve this maddening no-black-ink problem with HP Photosmart 7510.
Let's all keep these solutions for reference and hope that HP listens carefully and soon corrects the problem.