HP ENVY 4520 acts like it's printing, but it's not

[Shari2112]

My HP ENVY 4520 acts like it's printing, but the pages come out blank. It doesn't matter if I try to clean cartridges,  align cartridges, print a test page. Nothing is printed on the page. This is not even trying to print a doc from a computer. I updated the software, no change. 

[8lives]

Try changing the black cartridge. How often do you use the printer?

[Shari2112]

I'm actually waiting for both a new black and color cartridge to arrive, and my plan was to change them both. 

It's been about 3-4 months since I used it last. Had to set up a home office for the next few weeks. 

I can hear the cartridges moving, but the paper just comes out blank. 

[8lives]

Inkjets need to used at least once a week in order to keep the printheads in printing shape.

Failing to do so the ink will dry in the printheads.

Try soaking the printheads (bottom) in 1/4 inch of hot water for a few minutes then dry the cartridges with anything lint free.

If you see ink in the water try printing.

[Shari2112]

Aaaah. That could be it hopefully. 

The hot water revealed a tiny bit of color, but zero black.  So I'll see what it does after i get the new cartridges. 🤞🏻

[8lives]

Try soaking the color cartridge again.

Remove the black cartridge & try printing using just the color cartridge.