The black nozzle was clogged, so it printed with streaks, though it would print OK if I chose greyscale.
In my attempts to clean it, some paper got jammed in, which I removed, but still got an error message saying paper jam.
In more attempts to fix it, I put a triangular piece of paper in and that wrapped around the spindle. I have hacked a few little bits off, but most if won't budge.
I have a vague feeling the wi-fi connection didn't work correctly, as I always used it with a cable.
I am fairly sure it is beyond repair and I siphoned out most of the ink to put in my new printer.
There's always a chance someone might need a part for repairs, so I'm offering it here before it goes to the dump.