Thank you for the reply. This saves me the trouble of trying to further revive or give away the printer.
The advice I received when I purchased the printer was to power it on regularly as a way to prevent clogs etc. Unfortunately it seems this advice was harmful.
I've read lots of threads here about the Pro-1, and I'm hoping for some guidance.
I have an original lightly-used Pro-1 which, like many, sat unused for the last couple of years. Though it was semi-regularly powered up, it hasn't printed anything in a couple of years.
It's a beast of course...