I noticed that the hose that fills the tank has quite a bit of corrosion at the tank connection. Shouldn't this copper tube have a bonding wire? I posted a photo of it.
I noticed it while trying to unplug the toilet. It won't empty. I've already established the plug is not in the motor or macerator blade (which I replaced). There was quite a bit of accretion in the elbow with the joker valve but not enough to cause the plug. I reconnected and tested it anyhow after cleaning but no joy.
I disconnected the 1" hose from the back of the toilet at the joker valve, and connected a four foot piece of 1" hose and filled it with vinegar. Hopefully an overnight soak will do the job.
Any other suggestions?