Printer won't print from black ink cartridge
I have an HP Photosmart 3210a All-in-One printer, scanner, & copier. For some reason, it won't print from the black ink cartridge. At first, I thought it was empty, so I replaced it. The new one I bought had the same problem so I thought it was possibly a faulty cartridge. Finally, after I went back to the shop to exchange it, the newest one also didn't work. It will print from the other colors when selected. The problem seems just like the cartridge it out of ink but the ink level indicator is working and shows that there has been plenty of ink in all of the cartridges I have been trying.
Before I try anything on my own, I was wondering if anyone could advise me as to what the problem may be and how to deal with it. I don't have much confidence contacting the maker because I have a feeling that they will request that it be checked and or serviced by them. It is about 2-3 years old (once already repaired at a high cost) and not under warranty anymore.