The parts are located on the same place and the board uses the same types of parts. It is almost an identical copy of original 509A board. It is necessary to restore all affected traces, mounting holes, vias and to find not working parts (especially ICs).Īnother solution is to use a cloned 509A, that’s why the name cKLM-509A.
It is a very hard job to repair a PCB affected by battery corrosion. Generates pulse waveforms with its DCOs.Provides Control Voltages for synthesizer blocks as DCO waveshaper, VCF, VCA.Here is a list of some important 509A board’s tasks: Corroded metal can’t conduct anymore, so part of control board fails and it is not possible to program and play sounds. Metal parts are covered with white oxides and blue-green salts. Battery leak of an original NiCd battery in Korg Poly-61 synthesizer on control board KLM-509A/475 (shortly 509A/475) causes corrosion of vias, parts’ mounting holes, electric traces and electronic components (caps, ICs, transistors etc.).
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