The green light is blinking constantly and the printer won't print

Often happens HP cartridges to overheat.In that case the printer not recognize it and the green lamp blinking constantly.In most case only one of both cartridges defective and need to be replaced.But how to know which one?
Here's how: Open cover, put out color cartridge then close cover.If blinking stops replace color cartridge.If blinking continues put out black cartridge and put in color.If blinking stops replace black cartridge, if not stop replace both cartridges.