HP Deskjet 3520 - Black is not printing well

[JMW123]

HP Deskjet 3520 - Black is not printing well. All other colors are printing fine. Recently installed a black cartridge that had been sitting around awhile. I tried the printer routine to "clean ink cartridges", did nothing. I used isopropyl alcohol (per a YouTube video) to clean the print head, did nothing.

The questions:

- Is there a separate print head for each color?

- If I purchased a black cartridge do I run the risk of it not working as well?

- Might the problem be just a bad ink cartridge?

[Riddle_Decipher]

@JMW123 It looks like you've done everything that could possibly resolve the issue, and I suggest you talk to HP support and discuss your options, follow the below steps to get started:

1) Click on this link - http://www.hp.com/contacthp/

2) Click on Sign-in or select the product using the below step:

3) Enter the serial of your device.

4) Select the country from the drop-down.

5) Click on "Show Options".

Fill the web-form, to populate a case number and phone number for yourself!

Also, if you are having trouble navigating through the above options, it's most likely because the device is out of warranty, if yes? please send me a private message with the region you are contacting us from, 

here's how private messages work: Click here for details.

P.S: Welcome to HP Community 😉

If you wish to thank me for my efforts, you could click on "Accept as solution" on my post as the solution should help others too.