Recapping a dead cassette deck: a vintage-audio repair triage
TL;DR “Dead” can mean anything from a sticky play button to catastrophic power supply failure. Map the symptoms first before you commit to a $40 parts order. Electrolytic capacitors dry out over 30–40 years. The tell is ESR (equivalent series resistance), which you can’t measure with a multimeter—you need a dedicated ESR meter. Mechanical failures (belts, pinch rollers, switches) cause 50% of what looks like electronics trouble. Try contact cleaner and spin the reels manually before you touch a soldering iron. Replace the power supply filter caps first. If hum persists after disconnecting the mains input, you’ve got a trace issue, not a capacitor issue. Full recap economics: ~$15–40 in parts + 2–6 hours of work. Only worth your time if the restored unit will fetch ~60% of that total cost on resale. What “Dead” Really Means A cassette deck doesn’t come with an error code. It just stops. And the failure modes are a taxonomy you need to parse before you spend an evening at the bench. ...