How to Clean Printhead in HP Smart Tank 515 Printer?

all purpose N0.2 thinner or oil paint thinner? also can regular rubbing alcohol be used?

Thank you for the vedio, i did the same but after i power on the printer i cannot use any bottom and the power is on, i even cannot power off the printer, what is the problem?

Thanks so much for this video. Have you made the video on how to remove the air?

very informative and experienced solution

Thank you, I have cleaned it the printhead previously and it has improved but leaving it for 20+ minutes never occurred to me..