Maybe he's just talking about poor tech soldering, I'm not sure. http://synthtweaks.com/roland-juno-106-80017a-filter-chip-repair-1/ http://synthtweaks.com/roland-juno-106-80017a-vcfvca-chip-repairreplacement-part-2/ http://synthtweaks.com/roland-juno-106-80017a-vcfvca-chip-repairreplacement-part-3/