Download video: How to fix a HP Printer, not printing black ink and missing colours.
Channel: John Kennedy
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To do this take out the printer head unit which holds the Ink Cartridges in the printer. This simply unclips from the printer. There is no need to waste your ink trying to clean heads as this just wastes your coloured ink and makes the situation worse because it adds to the build up of dried ink on the print head. Typically the black is first to go as this is the most used ink cartridge.
I spent hours going out of my mind trying to find a solution that didn't require me buying anything from anybody. As it wasn't easy to find this simple solution I thought I'd share it with you on YouTube. Hope it helps.
p.s If you are interested in print cartridges you can buy them here on the sponsored link.