"Vintage synthesizers reward patience. The repair is half the music.
"KaiRenner26th of April 2026
Vintage Synthesizer Collecting and Repair
Collecting, evaluating, and repairing vintage analog synthesizers. This slate covers what to look for when buying, how to assess condition, and how to approach common faults including dead keys, drifting oscillators, and noisy pots.
3Tools
12Months
Buying a Vintage Synth
Where to find instruments: eBay, Reverb, local classifieds, estate sales. What to check before buying: working keys, original PSU, signs of corrosion or recap work.
Assessing Condition
Visual inspection checklist. Test each voice, check tuning stability, listen for noise or hum. Identify missing or damaged sliders and knobs.
Basic Repair Workflow
Start with cleaning pots and keys. Replace capacitors in power supply if aged. Reseat connectors. Use service manuals from Synth Zone or Elektrotanya.
Pre-Purchase Checklist
All keys respond
Oscillators track across octaves
No visible corrosion on PCB
Power supply voltages in spec
Pots respond without crackling
Panel complete (sliders, knobs)
Start with well-documented synths like the Juno 106, Roland SH-101, or Korg Poly-61. Service manuals are widely available and repair communities are active on forums like Gearslutz and Reddit r/synthesizers.