Hp 3210 photosmart all-in-one printer - will not print black following multiple cartridge change. Have cleaned heads and tried new black cartridge - no change. Model no. MY5BH830WB.

This same problem happened to me after several weeks of non-use of the printer (we had purchased a new one). If you know that your "hp" print cartridges are the correct ones for this particular printer, and you know they are full of ink, then the problem mostly likely is a clogged printhead. Since you can't replace or remove the printhead from this printer, my solution was to use canned air with the little plastic tube and spray several shots of air into the little nozzles that are on the printer where the ink goes through. Did this sseveral times and then cleaned the print heads approximately 3 times. Worked like a charm and I'm back in business.

Check the catridge number size if is the same with the one that come with your printer if is not the same number then the one you buy is not conpactable with your printer so it can work unless you get the actual number of the one that come with the printer. but if the size is correct then check the fixing again and fixe it properly. or you check the printer software uninstall it then reinstall it back, also, your can check the container the ink store in when the printer finish printing inside the printer in some cases if their is alot of ink setle in that container the printer will not ready so what you do is that there is a fome in it that **** the ink bring it out and clean it very well then put it back.