I have the exact same printer and had to replace the print head. This dell 720 is a discontnued model and may or maynot be worth the $35 fix. the issue is the print head gets clogged up prematurely in these 720 series dell paperwights.
the best course of action:
1. purchase priont head
2. or buy a new printer
You can try print head cleaning kit but you may be wasting you time and money on the ket because it does not work 100 percent of the time.
thanks for your question, i would thank you for your ratings and feedback in advance!
Btw, I’m available to help over the phone in case u need at
https://www.6ya.com/expert/edwy_1a56970cf1ea4620
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