My HP Ink containers have dried out.
I found out that printer ink is 65% to 75% distilled water and about 6% alcohal. The rest is mostly coloring.
I soaked the HP containers in water and they are coming clean.
I'm only working with the black ink for now. The color container is almost full so I will soak the jets on a wet towel. I have never used color very much; but with the grand kids I plan to print more color.
This color unit will only print. No scanning, etc.
This whole process is not worth the effort, except it is fun.
If it doesn't work I can always throw it out a high rise window. .