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"Upgrades- - clean entire unit (including keyboard, switches, pots and knobs, plugs, and sockets)
- clean all board interconnects
- recap and reflow contour/glide PCB
- tested boards - all OK
- replaced chips on voice 1
- replaced chips on contour/glide board
- recap and reflow digital board
- installed new power supply with mods to digital and demux PCBs
- recap and repopulate demux PCB
- recap and repopulate common analog PCB
- test system - OK
- recap and repopulate all 6 voice cards
- test all voices - all OK
- replace battery
- resolved VCF control issue
- replace all OP amps on demux PCB
- replace capacitors and IC's
- install replacement OSC3 tuning control
- restore factory presets
- calibration
- final test - OK"
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