Does anyone know what the innards of the empeg's rotary encoder are like?

Not sure about the players exact makeup, but plan to soon for mine is getting very erratic as well. Most are either a metal slider contacting a graphite base or all metal contacts with some grease. From what I've noticed taking things apart over the years is a paste is formed between the contacts and your alcohol removed this. The noise comes from signal making small arcs from searching for a contact path.