The board header connectors and cables inside GFA-585’s are often corroded, from leaked capacitor spittle and time. These types of “JST connectors” are meant to be machine-crimped, but they can be soldered manually, but that’s a real pain.
So I am offering a complete set of new cables and board headers for $40. They’ll be up in the store soon!
Cables for GFA-565 and GFA-555 MKII continue to be available.