This isn't really a bash towards staples, because I like shopping there.
Anyway, my stepbrother had an epson et2760. He was selling it for $150 but he ended up trading me for some pokemon cards. I have doubles of all of the ink and a full bottle of black. The printer was filled up on all ink as well.
When I got it (he said he had trouble connecting it) it took me a bit but I connected, and the first print was terrible. All I got was a small faded yellow and that's it. Eventually after numerous head cleanings and nozzle checks I got each color, except black (that's what I primarily need!)
I called staples and asked if they recommended anything and all the guy said was "you should have never traded/bought a used printer. That was your first mistake. The printer head is bad and there's nothing you can do to fix it, except buy a new printer)
So long story short I came across this video, did the power cleaning, and my printer magically worked! Now I have all colors including black!
So i want to include the video that helped me, incase anyone else is running into this issue! I was about to give up on it until I found this! https://youtu.be/VEHk19i-S20?si=6EvKJ-rFD_VMPoS8