I’m having an odd issue as of last Friday where I will turn my 9900 on, and the cyan channel will be completely gone. So far, it has always fully come back after a single pair cleaning (low power), but the fact that the same channel is dropping out fully overnight while the printer is shut off has me scratching my head.
I did give the printer’s capping station a swab-down with Piezoflush last week (try to do this every 2-3 months), and I’ve just checked to make sure there isn’t any lint or debris stuck anywhere, and everything looks fine to me (nothing obvious anyway). I replaced both the capping station and ink selector unit just under a year ago, so they should still be in decent shape I would hope. I keep a humidifier running in the print room as well.
Could there be another reason for an entire channel to disappear and then come right back? I tried tracing the lines back with a flashlight and couldn’t find any air pockets. I did agitate the carts last Friday as well - I just checked the cyan cartridge and it seems ok to me. Could there be a failing o-ring somewhere? or should I try re-priming just to see if that helps?
It’s happened three times now which seems too weird to be a coincidence and has me thinking I might have upset something during my TLC session last week. Any ideas?
Thanks as always!