just had basically the same experience with my printer. There was absolutely no indication that anything was physically wrong with the fucker, but because it's over 10 years old and was throwing an error code, I had to throw the whole thing out. No buying replacement parts, no bypassing the errors, just huck it in the junk bin. It isn't even planned obsolescence anymore, it's enforced obsolescence. They will literally rip a working object/piece of software out of your hands by any means they can to force the upgrade.
I should have been listening to the right to repair people much sooner.