I got an Epson DX7450 second hand. It came with no cartridges, so I bought a CIS system on Ebay with autoreset chips. However it does not recognize the black cartridge no mather what I do.
They even sent me a spare chip for the cartridge but it did not help either. Any idea what should I do?
It is not the contacts, because when I swap the black and yellow cartridge it shows that yellow cartridge is not recognized.