HP Photosmart 7520 - Printer Failure/Black Ink Does Not Print

Mar 3, 2022
I been trying to get my old Photosmart 7620 to print without erroring out with error "Printer Failure" when trying to print with a new black ink cartridge.
I attempted to also replace the printhead with a new one from Amazon but either I get "printer failure" or it would not print black ink at all (but all other colors work).
I tried two different black ink cartridges and the original one but same error. Not sure what else to do, any suggestion what it could be?

I also wiped out all the black ink that was behind the printhead and any black ink I saw sweared inside it.

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