Originally Posted by
miriam
I would use some tri-flo on every moving part.
On every metal to metal moving part. Even tri-flo is dead dinosaurs and not great for some plastic and nylon parts and if that machine is like my 6122, it's got more white stuff in it than you'd think.
This sounds like a mechanical problem - not a computer problem and is likely - as Miriam says - a problem of old dried gummy oil.