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06-16-2018 05:02 PM
I've had an HP Officejet Pro 8500a for many years and love it. Recently I've had difficulty with the black ink not printing even though there is plenty of ink. A few months ago I intalled new ink.
It quit printing black so I had it clean the printheads and that actually made the problem worse and it stopped printing some of the other colours. I've gotten a kit to clean the where the ink connects to the printer and run special cleaning paper through the printer. Run diagnostics page, tried to callibrate and align. The diagnostic page was streaky so I ran it again after the cleaning and it was better, but the black was still streaky. Alignment failed again and now it's not printing anything.
it's not telling me I need to replace the printheads but what would you suggest? It's no longer under warranty and I hate to pay that much for new printheads if that's not the problem.
I had a similar issue with this a few months ago and finally after deep cleaning a number of times (probably at least 5 or 6) it finally started working again, but that uses so much ink. Please help.
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